/* ==========================================================================
   Barbato Insult Index — styles
   Pure CSS. Layers, nesting, light-dark(), oklch, container queries,
   scroll-driven animations, :has() state, popover + @starting-style,
   exclusive <details>, ::details-content transitions.
   ========================================================================== */

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

/* ───────────────────────── reset ───────────────────────── */
@layer reset {
  *, *::before, *::after { box-sizing: border-box; }
  * { margin: 0; }
  html { -webkit-text-size-adjust: none; text-size-adjust: none; }
  body { min-height: 100dvh; line-height: 1.5; -webkit-font-smoothing: antialiased; }
  img, svg, video { display: block; max-width: 100%; }
  input, button { font: inherit; color: inherit; }
  button { background: none; border: 0; padding: 0; cursor: pointer; }
  h1, h2, h3 { text-wrap: balance; line-height: 1.1; }
  p { text-wrap: pretty; }
  ol, ul { list-style: none; padding: 0; }
  summary { list-style: none; }
  summary::-webkit-details-marker { display: none; }
}

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

    --font-sans: "Inter Variable", "Inter", "SF Pro Text", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    --font-display: "Inter Variable", "Inter", "SF Pro Display", system-ui, sans-serif;
    --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;

    /* fluid type */
    --step--1: clamp(.8rem, .76rem + .2vw, .9rem);
    --step-0:  clamp(1rem, .95rem + .3vw, 1.125rem);
    --step-1:  clamp(1.25rem, 1.1rem + .6vw, 1.5rem);
    --step-2:  clamp(1.6rem, 1.3rem + 1.4vw, 2.25rem);
    --step-3:  clamp(2.4rem, 1.5rem + 4.5vw, 5.25rem);

    /* spacing */
    --s-1: .25rem; --s-2: .5rem; --s-3: .75rem; --s-4: 1rem;
    --s-5: 1.5rem; --s-6: 2rem;  --s-7: 3rem;   --s-8: 5rem;

    --radius: 1.25rem;
    --radius-sm: .75rem;
    --gutter: clamp(1rem, 4vw, 2.5rem);
    --content: 72rem;

    /* palette (oklch), theme-aware via light-dark() */
    --bg:       light-dark(oklch(97% .01 80),  oklch(13% .015 280));
    --bg-2:     light-dark(oklch(99% .005 80), oklch(17% .02 280));
    --surface:  light-dark(oklch(100% 0 0 / .72), oklch(22% .02 280 / .55));
    --line:     light-dark(oklch(85% .02 80),  oklch(32% .02 280));
    --text:     light-dark(oklch(18% .02 280), oklch(94% .01 80));
    --muted:    light-dark(oklch(45% .02 280), oklch(70% .015 280));
    --accent:   oklch(78% .19 60);
    --accent-2: oklch(72% .22 340);
    --accent-3: oklch(80% .16 190);
    --danger:   oklch(70% .22 25);

    --face: url("barbato.webp");

    --shadow: 0 1px 0 light-dark(oklch(100% 0 0 / .6), oklch(100% 0 0 / .04)) inset,
              0 20px 40px -24px light-dark(oklch(20% .05 280 / .25), oklch(0% 0 0 / .6));
  }

  /* per-item hue → colour, used by bars, cards, momentum tiles */
  @property --v { syntax: "<number>"; inherits: true; initial-value: 0; }
  @property --hue { syntax: "<number>"; inherits: true; initial-value: 60; }
}

/* ───────────────────────── base ───────────────────────── */
@layer base {
  html { scroll-behavior: smooth; scroll-padding-top: 5rem; }

  body {
    font-family: var(--font-sans);
    font-size: var(--step-0);
    color: var(--text);
    background:
      radial-gradient(60rem 40rem at 10% -10%, color-mix(in oklch, var(--accent) 22%, transparent), transparent 60%),
      radial-gradient(50rem 35rem at 110% 10%, color-mix(in oklch, var(--accent-2) 18%, transparent), transparent 60%),
      radial-gradient(40rem 30rem at 50% 110%, color-mix(in oklch, var(--accent-3) 14%, transparent), transparent 60%),
      var(--bg);
    background-attachment: fixed;
  }

  a { color: inherit; text-decoration: none; }
  ::selection { background: color-mix(in oklch, var(--accent) 60%, transparent); }

  :focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: .35rem;
  }

  .visually-hidden {
    position: absolute; width: 1px; height: 1px; overflow: hidden;
    clip-path: inset(50%); white-space: nowrap;
  }

  .skip {
    position: fixed; inset-inline-start: 1rem; top: 1rem; z-index: 100;
    padding: .6rem 1rem; border-radius: .5rem;
    background: var(--accent); color: oklch(15% 0 0);
    translate: 0 -200%;
    transition: translate .2s;
    &:focus-visible { translate: 0 0; }
  }
}

/* ───────────────────────── layout ───────────────────────── */
@layer layout {
  main {
    width: min(100% - 2 * var(--gutter), var(--content));
    margin-inline: auto;
    display: grid;
    gap: var(--s-7);
    padding-block: var(--s-6) var(--s-8);
  }

  .site-header {
    position: sticky; top: 0; z-index: 50;
    display: flex; align-items: center; gap: var(--s-5);
    padding: var(--s-3) var(--gutter);
    background: color-mix(in oklch, var(--bg) 70%, transparent);
    backdrop-filter: blur(18px) saturate(1.4);
    -webkit-backdrop-filter: blur(18px) saturate(1.4);
    border-bottom: 1px solid var(--line);

    .brand { display: inline-flex; align-items: center; gap: var(--s-2); font-weight: 700; letter-spacing: -.02em; }
    .brand-mark {
      inline-size: 1.4rem; aspect-ratio: 1; border-radius: 40%;
      background: conic-gradient(from 210deg, var(--accent), var(--accent-2), var(--accent-3), var(--accent));
      box-shadow: 0 0 0 3px color-mix(in oklch, var(--accent) 30%, transparent);
    }
    .brand-name em { font-style: normal; color: var(--muted); font-weight: 500; }

    .site-nav {
      display: none; gap: var(--s-4); margin-inline: auto; font-size: var(--step--1); color: var(--muted);
      a { padding: .3rem .1rem; border-bottom: 1px solid transparent; transition: color .2s, border-color .2s; }
      a:hover { color: var(--text); border-color: var(--accent); }
      @media (width >= 48rem) { display: flex; }
    }

    .status {
      margin-inline-start: auto;
      display: inline-flex; align-items: center; gap: .5rem;
      font-size: var(--step--1); color: var(--muted);
      padding: .35rem .8rem; border-radius: 999px;
      border: 1px solid var(--line); background: var(--surface);
      white-space: nowrap;
      b { color: var(--text); font-weight: 600; }
      @media (width < 48rem) { .status-label { display: none; } }
    }
    .status-dot {
      inline-size: .55rem; aspect-ratio: 1; border-radius: 50%;
      background: var(--danger);
      box-shadow: 0 0 0 0 color-mix(in oklch, var(--danger) 60%, transparent);
      animation: pulse 1.6s ease-out infinite;
    }
  }

  .site-footer {
    width: min(100% - 2 * var(--gutter), var(--content));
    margin-inline: auto;
    padding-block: var(--s-6) var(--s-8);
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: var(--step--1);
    display: grid; gap: var(--s-2);
    strong { color: var(--text); }
    .tiny { font-size: .8em; opacity: .8; }
  }
}

/* ───────────────────────── components ───────────────────────── */
@layer components {

  /* Hero ----------------------------------------------------------- */
  .hero {
    padding-block: var(--s-7) var(--s-3);
    display: grid; gap: var(--s-5);

    > h1 { max-inline-size: 18ch; }

    h1 {
      font-family: var(--font-display);
      font-size: var(--step-3);
      font-weight: 800;
      letter-spacing: -.045em;
      background: linear-gradient(100deg, var(--text) 30%, var(--accent) 70%, var(--accent-2));
      -webkit-background-clip: text; background-clip: text; color: transparent;
    }
    .lede { font-size: var(--step-1); color: var(--muted); max-inline-size: 52ch; }
    .lede strong { color: var(--text); font-weight: 600; }
  }

  .eyebrow, .kicker {
    font-family: var(--font-mono);
    font-size: .72rem;
    letter-spacing: .12em; text-transform: uppercase;
    color: var(--accent);
  }


  /* Panel ---------------------------------------------------------- */
  .panel {
    container: panel / inline-size;
    position: relative;
    padding: clamp(1.25rem, 3vw, 2.5rem);
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: grid; gap: var(--s-5);
  }
  .panel-head {
    display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: var(--s-4);
    h2 { font-size: var(--step-2); font-weight: 700; letter-spacing: -.03em; margin-top: .25rem; }
  }
  .panel-note { color: var(--muted); font-size: var(--step--1); max-inline-size: 40ch; }
  .footnote { color: var(--muted); font-size: var(--step--1); }

  /* Segmented control / filters (radio-driven, no JS) --------------- */
  .segmented, .filters {
    border: 0; padding: .25rem; margin: 0;
    display: inline-flex; gap: .2rem;
    background: color-mix(in oklch, var(--line) 50%, transparent);
    border-radius: 999px;

    label { position: relative; }
    input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
    span {
      display: inline-block; padding: .45rem .9rem; border-radius: 999px;
      font-size: var(--step--1); color: var(--muted); white-space: nowrap;
      transition: background .25s, color .25s, box-shadow .25s;
    }
    input:checked + span {
      background: var(--bg-2); color: var(--text);
      box-shadow: 0 1px 2px oklch(0% 0 0 / .25);
    }
    input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
    label:hover input:not(:checked) + span { color: var(--text); }
  }

  /* Chart ---------------------------------------------------------- */
  .bars { display: grid; gap: var(--s-3); }

  .bar {
    --v: var(--all);
    --c: oklch(74% .18 var(--hue));
    display: grid; align-items: center; gap: var(--s-3);
    grid-template-columns: minmax(8rem, 14rem) 1fr 3.5rem;

    @container panel (width < 36rem) {
      grid-template-columns: 1fr 3.5rem;
      .bar-label { grid-column: 1 / -1; }
    }

    &::after {
      content: attr(data-all);
      font-family: var(--font-mono); font-size: var(--step--1);
      font-variant-numeric: tabular-nums; text-align: end; color: var(--muted);
    }
  }
  .bar-label { font-weight: 600; font-size: var(--step--1); }
  .bar-track {
    block-size: 1.6rem; border-radius: 999px; overflow: hidden;
    background: color-mix(in oklch, var(--line) 55%, transparent);
  }
  .bar-fill {
    display: block; block-size: 100%;
    inline-size: calc(var(--v) * 100%);
    border-radius: inherit;
    background: linear-gradient(90deg, color-mix(in oklch, var(--c) 70%, var(--bg)), var(--c));
    box-shadow: 0 0 18px -4px var(--c);
    transition: inline-size .7s cubic-bezier(.2,.9,.2,1);
  }

  /* period switching via :has() */
  .chart:has(input[value="site"]:checked) .bar { --v: var(--site); &::after { content: attr(data-site); } }
  .chart:has(input[value="now"]:checked)  .bar { --v: var(--now);  &::after { content: attr(data-now); } }

  /* Rising now ----------------------------------------------------- */
  .momentum {
    display: grid; gap: var(--s-3);
    grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  }
  .mo {
    --c: oklch(74% .18 var(--hue));
    position: relative; overflow: hidden;
    padding: var(--s-4);
    border-radius: var(--radius-sm);
    border: 1px solid color-mix(in oklch, var(--c) 35%, var(--line));
    background:
      radial-gradient(18rem 8rem at 100% 0%, color-mix(in oklch, var(--c) 22%, transparent), transparent 70%),
      var(--bg-2);
    display: grid; gap: .35rem; align-content: start;
    transition: translate .25s, box-shadow .25s;
    &:hover { translate: 0 -3px; box-shadow: 0 18px 30px -20px var(--c); }
    h3 { font-size: var(--step-1); font-weight: 700; letter-spacing: -.02em; }
    p { color: var(--muted); font-size: var(--step--1); }
  }
  .mo-delta {
    font-family: var(--font-mono); font-weight: 700; color: var(--c);
    font-variant-numeric: tabular-nums;
    &::before { content: "▲ "; font-size: .7em; }
  }

  .ticker {
    overflow: hidden; margin-inline: calc(-1 * clamp(1.25rem, 3vw, 2.5rem));
    border-block: 1px solid var(--line);
    mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
    -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  }
  .ticker-track {
    display: flex; gap: var(--s-6); inline-size: max-content; padding-block: var(--s-3);
    font-family: var(--font-mono); font-size: var(--step--1); text-transform: uppercase; letter-spacing: .1em;
    color: var(--muted);
    animation: marquee 32s linear infinite;
    span::before { content: "✦ "; color: var(--accent); }
  }
  .ticker:hover .ticker-track { animation-play-state: paused; }

  /* Vocabulary ----------------------------------------------------- */
  .cards {
    display: grid; gap: var(--s-3); align-items: start;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
  }
  .card {
    --c: oklch(74% .18 var(--hue));
    border-radius: var(--radius-sm);
    border: 1px solid var(--line);
    background: var(--bg-2);
    overflow: hidden;
    transition: border-color .25s, box-shadow .25s;
    interpolate-size: allow-keywords;

    &[open] { border-color: color-mix(in oklch, var(--c) 50%, var(--line)); box-shadow: 0 0 0 4px color-mix(in oklch, var(--c) 12%, transparent); }

    summary {
      display: flex; align-items: center; justify-content: space-between; gap: var(--s-3);
      padding: var(--s-4); cursor: pointer;
      &::after {
        content: ""; inline-size: .6rem; aspect-ratio: 1; flex: none;
        border-inline-end: 2px solid var(--muted); border-block-end: 2px solid var(--muted);
        rotate: 45deg; margin-inline-start: .25rem;
        transition: rotate .3s;
      }
    }
    &[open] summary::after { rotate: -135deg; }

    .card-term { font-weight: 700; font-size: var(--step-1); letter-spacing: -.02em; }
    .card-dir {
      margin-inline-start: auto;
      font-family: var(--font-mono); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase;
      padding: .25rem .6rem; border-radius: 999px;
      color: var(--c); background: color-mix(in oklch, var(--c) 14%, transparent);
      white-space: nowrap;
    }

    &::details-content {
      block-size: 0; overflow: clip;
      transition: block-size .35s ease, content-visibility .35s allow-discrete;
    }
    &[open]::details-content { block-size: auto; }

    .card-body {
      padding: 0 var(--s-4) var(--s-4);
      display: grid; gap: var(--s-2);
      color: var(--muted); font-size: var(--step--1);
      strong { color: var(--text); }
    }
  }

  /* direction filtering via :has() */
  .vocab:has(input[value="us"]:checked)   .card:not([data-dir="us"]),
  .vocab:has(input[value="him"]:checked)  .card:not([data-dir="him"]),
  .vocab:has(input[value="both"]:checked) .card:not([data-dir="both"]) {
    display: none;
  }

  /* Milestones ----------------------------------------------------- */
  .timeline {
    display: grid; gap: var(--s-5);
    position: relative; padding-inline-start: 2.9rem;
    &::before {
      content: ""; position: absolute; inset-block: .4rem; inset-inline-start: 1rem; inline-size: 2px;
      background: linear-gradient(var(--accent), var(--accent-2), var(--accent-3));
      border-radius: 2px;
    }
    li { position: relative; display: grid; gap: .25rem; }
    li::before {
      content: ""; position: absolute; inset-inline-start: -2.9rem; top: .1rem;
      inline-size: 2.1rem; aspect-ratio: 1; border-radius: 50%;
      background: var(--bg-2); border: 2px solid var(--accent);
      box-shadow: 0 0 0 4px var(--bg);
    }
    li:last-child::before { border-color: var(--danger); animation: pulse 1.6s ease-out infinite; }
    time { font-family: var(--font-mono); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
    h3 { font-size: var(--step-1); font-weight: 700; letter-spacing: -.02em; }
    p { color: var(--muted); }
  }

  /* Method / footnotes --------------------------------------------- */
  .prose { display: grid; gap: var(--s-4); max-inline-size: 62ch; font-size: var(--step-0); line-height: 1.65; }
  .fn {
    display: inline-grid; place-items: center; vertical-align: super;
    inline-size: 1.25rem; aspect-ratio: 1; border-radius: 50%;
    font-family: var(--font-mono); font-size: .65rem; font-weight: 700;
    color: oklch(15% 0 0); background: var(--accent);
    margin-inline-start: .15rem;
    transition: scale .2s;
    &:hover { scale: 1.15; }
  }

  .note {
    inset: auto; margin: auto;
    position: fixed; inset-inline: 0; bottom: max(1.5rem, env(safe-area-inset-bottom));
    inline-size: min(90vw, 34rem);
    padding: var(--s-4) var(--s-5);
    border-radius: var(--radius-sm);
    border: 1px solid var(--line);
    background: var(--bg-2); color: var(--text);
    box-shadow: 0 30px 60px -20px oklch(0% 0 0 / .6);
    font-size: var(--step--1);
    b { color: var(--accent); margin-inline-end: .35rem; }
    &::backdrop { background: oklch(0% 0 0 / .25); backdrop-filter: blur(2px); }

    /* enter / exit transitions for popover */
    opacity: 0; translate: 0 1rem;
    transition: opacity .3s, translate .3s, display .3s allow-discrete, overlay .3s allow-discrete;
    &:popover-open { opacity: 1; translate: 0 0; }
    @starting-style { &:popover-open { opacity: 0; translate: 0 1rem; } }
  }
}

@layer components {

  /* ── He is behind everything. Fixed, so he never scrolls away. ── */
  .watch {
    position: fixed; inset: 0; z-index: -1; pointer-events: none;
    background: var(--face) no-repeat 50% 40% / min(125vmin, 92rem);
    image-rendering: pixelated;
    opacity: .04;
    filter: grayscale(1) contrast(1.45);
    mix-blend-mode: soft-light;
  }

  /* ── And he gets closer the further you read. ── */
  .approach {
    position: fixed; z-index: -1; pointer-events: none;
    inset-inline-end: -7vmin; inset-block-end: -9vmin;
    inline-size: 30vmin; aspect-ratio: 1;
    background: var(--face) no-repeat center / contain;
    image-rendering: pixelated;
    opacity: .05;
    filter: grayscale(1) contrast(1.3);
    scale: .7; rotate: -4deg;
  }
  @supports (animation-timeline: scroll()) {
    .approach {
      animation: approach linear both;
      animation-timeline: scroll(root block);
    }
  }

  /* ── Roughly every 17 seconds, for about seventy milliseconds. ── */
  .blink {
    position: fixed; inset: 0; z-index: 60; pointer-events: none;
    background: var(--face) no-repeat 50% 47% / min(82vmin, 48rem);
    image-rendering: pixelated;
    opacity: 0;
    filter: grayscale(1) contrast(1.7) brightness(1.15);
    mix-blend-mode: screen;
    animation: subliminal 17s steps(1, end) infinite;
  }

  /* ── Small appearances elsewhere. ── */
  .site-header .brand-mark {
    background: var(--face) no-repeat center / cover;
    image-rendering: pixelated;
    box-shadow: 0 0 0 3px color-mix(in oklch, var(--danger) 28%, transparent);
    animation: breathe 9s ease-in-out infinite;
  }

  .tick-face {
    display: inline-block; inline-size: 1.3rem; aspect-ratio: 1;
    background: var(--face) no-repeat center / contain;
    image-rendering: pixelated;
    filter: grayscale(1) contrast(1.2);
    opacity: .75; vertical-align: -.35rem;
  }

  .timeline li::before {
    background: var(--face) no-repeat center / 115%, var(--bg-2);
    image-rendering: pixelated;
    filter: grayscale(1) contrast(1.15);
  }
  .timeline li:last-child::before {
    filter: none;
    border-color: var(--danger);
  }

  /* Hover a term and he rises up behind it. */
  .card { position: relative; }
  .card::before {
    content: ""; position: absolute; z-index: 0; pointer-events: none;
    inset-block-end: 0; inset-inline-end: 1.1rem;
    inline-size: 5.5rem; aspect-ratio: 1;
    background: var(--face) no-repeat center / contain;
    image-rendering: pixelated;
    filter: grayscale(1) contrast(1.3);
    opacity: 0; translate: 0 100%;
    transition: opacity .55s ease, translate .6s cubic-bezier(.2,.9,.2,1);
  }
  .card:hover::before, .card:focus-within::before { opacity: .4; translate: 0 30%; }
  .card > summary, .card .card-body { position: relative; z-index: 1; }

  /* ── The dossier ── */
  .dossier {
    display: grid; gap: var(--s-5); align-items: start;
    grid-template-columns: minmax(0, 17rem) minmax(0, 1fr);
    @container panel (width < 34rem) { grid-template-columns: 1fr; }
  }

  .feed { margin: 0; display: grid; gap: var(--s-2); }
  .feed figcaption { font-size: var(--step--1); color: var(--muted); }

  .feed-frame {
    position: relative; isolation: isolate; overflow: hidden;
    border-radius: var(--radius-sm);
    border: 1px solid color-mix(in oklch, var(--danger) 35%, var(--line));
    background: radial-gradient(circle at 50% 32%, oklch(34% .06 255), oklch(11% .02 280));

    img {
      inline-size: 100%; block-size: auto; aspect-ratio: 1; object-fit: cover;
      image-rendering: pixelated;
      filter: saturate(.45) contrast(1.05) brightness(1.04);
      animation: creep 23s ease-in-out infinite alternate;
    }
    &::before {
      content: ""; position: absolute; inset: 0; z-index: 2; pointer-events: none;
      background: linear-gradient(165deg,
        color-mix(in oklch, var(--accent) 32%, transparent),
        transparent 45%,
        color-mix(in oklch, var(--danger) 38%, transparent));
      mix-blend-mode: overlay;
    }
  }

  .rec {
    position: absolute; z-index: 5; inset-block-start: .6rem; inset-inline-start: .7rem;
    display: inline-flex; align-items: center; gap: .4rem;
    font-family: var(--font-mono); font-size: .62rem; letter-spacing: .2em;
    color: oklch(95% .01 0); text-shadow: 0 1px 3px oklch(0% 0 0 / .9);
    &::before {
      content: ""; inline-size: .5rem; aspect-ratio: 1; border-radius: 50%;
      background: var(--danger); box-shadow: 0 0 8px var(--danger);
      animation: rec 1.5s steps(1, end) infinite;
    }
  }

  .reticle {
    --rc: oklch(88% .2 25 / .85);
    position: absolute; z-index: 4; inset: 15% 19%; pointer-events: none;
    background:
      linear-gradient(var(--rc) 0 0) 0 0 / 15px 2px no-repeat,
      linear-gradient(var(--rc) 0 0) 0 0 / 2px 15px no-repeat,
      linear-gradient(var(--rc) 0 0) 100% 0 / 15px 2px no-repeat,
      linear-gradient(var(--rc) 0 0) 100% 0 / 2px 15px no-repeat,
      linear-gradient(var(--rc) 0 0) 0 100% / 15px 2px no-repeat,
      linear-gradient(var(--rc) 0 0) 0 100% / 2px 15px no-repeat,
      linear-gradient(var(--rc) 0 0) 100% 100% / 15px 2px no-repeat,
      linear-gradient(var(--rc) 0 0) 100% 100% / 2px 15px no-repeat;
    animation: lock 8s ease-in-out infinite;
  }

  .scan {
    position: absolute; inset: 0; z-index: 3; pointer-events: none;
    background: repeating-linear-gradient(to bottom, transparent 0 2px, oklch(0% 0 0 / .34) 2px 4px);
    &::after {
      content: ""; position: absolute; inset-inline: 0; block-size: 20%;
      background: linear-gradient(transparent, oklch(100% 0 0 / .14), transparent);
      animation: sweep 6s linear infinite;
    }
  }

  .telemetry {
    margin: 0; display: grid;
    font-family: var(--font-mono); font-size: var(--step--1);
    border-block-start: 1px solid var(--line);

    > div {
      display: grid; grid-template-columns: minmax(5.5rem, 9rem) 1fr; gap: var(--s-3);
      padding-block: .75rem;
      border-block-end: 1px solid var(--line);
      @container panel (width < 26rem) { grid-template-columns: 1fr; gap: .15rem; }
    }
    dt {
      color: var(--muted); text-transform: uppercase;
      letter-spacing: .12em; font-size: .66rem; align-self: center;
    }
    dd { margin: 0; }
    .hot { color: oklch(78% .2 25); }
  }
}

/* ───────────────────────── motion ───────────────────────── */
@layer motion {
  @keyframes pulse {
    0%   { box-shadow: 0 0 0 0 color-mix(in oklch, var(--danger) 55%, transparent); }
    100% { box-shadow: 0 0 0 .8rem color-mix(in oklch, var(--danger) 0%, transparent); }
  }
  @keyframes marquee { to { translate: -50% 0; } }
  @keyframes approach { to { scale: 2.7; rotate: 3deg; opacity: .18; } }
  @keyframes subliminal {
    0%, 98.55%   { opacity: 0; }
    98.6%, 99%   { opacity: .1; }
    99.05%, 100% { opacity: 0; }
  }
  @keyframes breathe {
    0%, 100% { filter: grayscale(1) contrast(1.25); scale: 1; }
    50%      { filter: grayscale(0) contrast(1.05); scale: 1.12; }
  }
  @keyframes rec { 50% { opacity: 0; } }
  @keyframes sweep { from { top: -22%; } to { top: 100%; } }
  @keyframes lock { 0%, 100% { inset: 15% 19%; } 50% { inset: 9% 13%; } }
  @keyframes creep { to { scale: 1.09; translate: -1.5% -2.5%; } }
  @keyframes rise {
    from { opacity: 0; translate: 0 2rem; scale: .98; }
    to   { opacity: 1; translate: 0 0; scale: 1; }
  }
  @keyframes grow { from { inline-size: 0; } }

  /* scroll-driven reveals */
  @supports (animation-timeline: view()) {
    .panel, .mo, .timeline li {
      animation: rise linear both;
      animation-timeline: view();
      animation-range: entry 0% entry 40%;
    }
  }
  .bar-fill { animation: grow .9s cubic-bezier(.2,.9,.2,1) backwards; }
  .bar:nth-child(n) .bar-fill { animation-delay: calc(sibling-index() * 80ms); }

  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition-duration: .01ms !important; }
    html { scroll-behavior: auto; }
  }
}