/* Embodied Turing Machines — project page. One look: the film's deep-teal machine.
   Palette and type follow the promo film: lime #CCFFA0, teal #40BEA0, orange #FF9E70, Geist / Geist Mono. */

:root {
  color-scheme: dark;
  --bg: #0B191B;
  --surface: rgba(18, 40, 42, .62);
  --surface-2: rgba(26, 52, 54, .66);
  --glass: rgba(10, 24, 26, .72);
  --sunken: rgba(0, 0, 0, .26);
  --cell: #0E2023;
  --line: rgba(204, 255, 160, .11);
  --line-2: rgba(204, 255, 160, .22);
  --ink: #F2F3EE;
  --ink-2: #DDE3DD;
  --muted: #AAB5B0;
  --faint: #6E7A76;
  --accent: #CCFFA0;
  --hl: #CCFFA0;
  --on-hl: #0B1406;
  --teal: #40BEA0;
  --orange: #FF9E70;
  --bad: #FF7A66;
  --code-bg: rgba(6, 15, 16, .78);
  --code-ink: #DDE3DC;
  --code-dim: #67726F;
  --kw: #C9A7FF; --fn: #CCFFA0; --cm: #8C9994; --nm: #FFC48A;
  --tape: #0F2123;
  --tape-ink: #E9EEE6;
  --tape-line: rgba(204, 255, 160, .18);
  --shadow: 0 0 0 1px rgba(204, 255, 160, .06), 0 24px 60px -30px rgba(0, 0, 0, .8);
  --shadow-lg: 0 0 0 1px rgba(204, 255, 160, .08), 0 40px 100px -40px rgba(0, 0, 0, .9);
  --glow: 0 0 24px rgba(204, 255, 160, .35);
  --sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --gutter: clamp(16px, 4vw, 40px);
  --maxw: 1240px;
  --r: 14px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; background: var(--bg); }
body {
  margin: 0; background: var(--bg);
  color: var(--ink); font: 400 17px/1.55 var(--sans); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
a { color: inherit; }
img, video { display: block; max-width: 100%; }
button { font: inherit; color: inherit; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gutter); }

/* the page background: robot episodes behind a deep-teal veil, never plain black */
.bgfx { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; background: #0C1C1E; }
.bgfx::before { content: ""; position: absolute; inset: -3%; background: url(../img/hand.jpg) 58% 42% / cover no-repeat; animation: bgdrift 70s ease-in-out infinite alternate; }
.bgfx::after { content: ""; position: absolute; inset: 0;
  background: radial-gradient(90% 70% at 50% 30%, rgba(14, 34, 36, .55) 0%, rgba(11, 25, 27, .78) 60%, rgba(9, 20, 22, .9) 100%),
    linear-gradient(rgba(204, 255, 160, .03) 1px, transparent 1px) 0 0 / 64px 64px,
    linear-gradient(90deg, rgba(204, 255, 160, .03) 1px, transparent 1px) 0 0 / 64px 64px; }
@keyframes bgdrift { from { transform: scale(1.02) translate3d(-1%, -1%, 0); } to { transform: scale(1.08) translate3d(1%, 1.5%, 0); } }
main, header, nav, footer, section { position: relative; z-index: 1; }

/* ------------------------------------------------------------------ nav */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 50; padding-top: env(safe-area-inset-top, 0px); transition: background .3s, border-color .3s; border-bottom: 1px solid transparent; }
.nav.solid { background: rgba(10, 23, 25, .78); backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px); border-bottom-color: var(--line); }
.nav .wrap { display: flex; align-items: center; gap: 18px; min-height: 60px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font: 600 16.5px/1 var(--mono); letter-spacing: .08em; }
.brand .cells { display: inline-flex; gap: 2px; position: relative; }
.brand .cells i { width: 7px; height: 12px; border: 1.5px solid var(--ink); border-radius: 2px; }
.brand .cells i:nth-child(2) { background: var(--hl); border-color: var(--accent); }
.brand .cells::after { content: ""; position: absolute; left: 9px; top: -6px; border: 4px solid transparent; border-top: 5px solid var(--accent); }
.nav ul { display: flex; gap: 4px; list-style: none; margin: 0 0 0 auto; padding: 0; }
.nav ul a { display: block; padding: 8px 10px; border-radius: 999px; text-decoration: none; font: 500 14.5px/1 var(--sans); color: var(--ink-2); transition: background .2s, color .2s; }
.nav ul a:hover, .nav ul a.on { background: var(--surface-2); color: var(--ink); }
.pill { display: inline-flex; align-items: center; height: 36px; padding: 0 16px; border-radius: 999px; text-decoration: none; font: 500 14.5px/1 var(--sans); background: var(--hl); color: var(--on-hl); white-space: nowrap; }
@media (max-width: 1040px) { .nav ul li.o2 { display: none; } }
@media (max-width: 760px) { .nav ul { display: none; } .pill { margin-left: auto; } }

/* ------------------------------------------------------------------ hero */
.hero { min-height: 100svh; display: grid; align-items: center; position: relative; overflow: hidden; padding: 96px 0 64px; isolation: isolate; }
/* the scrolling wall of episodes behind the title */
.wall { position: absolute; inset: 0; z-index: -2; display: grid; grid-template-rows: repeat(4, minmax(0, 1fr)); gap: 10px; padding: 8px 0; transform: rotate(-4deg) scale(1.16); }
.wall .wrow { overflow: hidden; display: flex; }
.wall .wtrack { display: flex; gap: 10px; height: 100%; width: max-content; animation: marq var(--dur, 90s) linear infinite; }
.wall .wrow.rev .wtrack { animation-direction: reverse; }
.wall.paused .wtrack { animation-play-state: paused; }
.wall .wt { position: relative; flex: none; height: 100%; aspect-ratio: 4 / 3; border-radius: 10px; overflow: hidden; background: var(--cell); }
.wall .wt img, .wall .wt video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; filter: saturate(.95) brightness(.86); }
.hero::before { content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(rgba(9, 21, 23, .72), rgba(9, 21, 23, 0) 130px),
    radial-gradient(64% 58% at 50% 50%, rgba(9, 21, 23, .84) 0%, rgba(9, 21, 23, .66) 48%, rgba(9, 21, 23, .32) 100%); }
.hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 180px; z-index: -1; background: linear-gradient(transparent, rgba(11, 25, 27, .96)); }
.hero .inner { text-align: center; min-width: 0; width: 100%; }
h1.title { margin: 0 auto; font: 750 clamp(42px, 8.6vw, 122px)/.9 var(--sans); letter-spacing: -.02em; text-transform: uppercase; text-wrap: balance; text-shadow: 0 4px 40px rgba(0, 0, 0, .6); }
h1.title .l1, h1.title .l2 { display: block; }
h1.title em { font-style: normal; color: var(--accent); text-shadow: 0 0 40px rgba(204, 255, 160, .35), 0 4px 40px rgba(0, 0, 0, .5); }
.subtitle { margin: 22px auto 0; max-width: 46ch; font: 400 clamp(19px, 2.1vw, 25px)/1.4 var(--sans); color: var(--ink); text-wrap: balance; text-shadow: 0 2px 18px rgba(0, 0, 0, .7); }
.tag { display: inline-block; margin-top: 18px; padding: 8px 14px; border-radius: 6px; font: 600 clamp(14px, 1.4vw, 16.5px)/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--accent); border: 1px solid var(--line-2); background: rgba(9, 21, 23, .55); }

/* the tape: world state, written by the head */
.tape { position: relative; margin: 34px calc(-1 * var(--gutter)) 0; height: 92px; overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 14%, #000 86%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 14%, #000 86%, transparent); }
.tape .track { position: absolute; left: 0; top: 22px; display: flex; will-change: transform; }
.tape .cell { flex: none; width: 156px; height: 52px; display: grid; place-items: center; margin-right: 6px; border-radius: 6px;
  background: rgba(15, 33, 35, .88); border: 1px solid var(--tape-line); color: var(--tape-ink); font: 500 15.5px/1 var(--mono); white-space: nowrap; letter-spacing: .01em; }
.tape .cell.blank { color: transparent; }
.tape .cell.stamp { animation: stamp .55s var(--ease); background: var(--hl); color: var(--on-hl); border-color: var(--accent); box-shadow: var(--glow); }
.tape .cell.rd { background: var(--teal); color: #04110E; border-color: var(--teal); }
.tape .cell.rd.stamp { box-shadow: 0 0 24px rgba(64, 190, 160, .6); }
@keyframes stamp { 0% { transform: scale(1.18); filter: brightness(1.4); } 60% { transform: scale(.97); } 100% { transform: scale(1); } }
.tape .head { position: absolute; left: 50%; top: 0; transform: translateX(-50%); width: 168px; height: 92px; pointer-events: none; }
.tape .head::before { content: ""; position: absolute; left: 0; right: 0; top: 16px; bottom: 16px; border: 2px solid var(--accent); border-radius: 10px; box-shadow: var(--glow), inset 0 0 18px rgba(204, 255, 160, .12); }
.tape .head::after { content: ""; position: absolute; left: 50%; top: 0; transform: translateX(-50%); border: 7px solid transparent; border-top: 9px solid var(--accent); }
.tape .head b { position: absolute; left: 50%; bottom: -1px; transform: translateX(-50%); font: 600 11.5px/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--accent); background: var(--bg); padding: 2px 8px; border-radius: 4px; white-space: nowrap; }
.tape .head.hit::before { animation: hit .4s var(--ease); }
@keyframes hit { 0% { transform: translateY(5px); } 100% { transform: none; } }

.cta { margin-top: 26px; display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.btn { display: inline-flex; align-items: center; gap: 9px; height: 44px; padding: 0 20px; border-radius: 999px; text-decoration: none; font: 500 16px/1 var(--sans);
  border: 1px solid var(--line-2); background: rgba(14, 32, 34, .7); color: var(--ink); cursor: pointer; transition: transform .2s var(--ease), border-color .2s, background .2s; }
.btn:hover { transform: translateY(-1px); border-color: var(--accent); }
.btn svg { width: 16px; height: 16px; flex: none; }
.btn.primary { background: var(--hl); color: var(--on-hl); border-color: var(--hl); box-shadow: 0 0 30px rgba(204, 255, 160, .25); }
.authors { margin-top: 24px; font: 400 18px/1.6 var(--sans); color: var(--ink-2); text-shadow: 0 2px 12px rgba(0, 0, 0, .7); }
.authors span { white-space: nowrap; }
.authors sup { font-size: .7em; color: var(--muted); }
.authors .aff { display: block; color: var(--muted); font-size: 16px; white-space: normal; }
.scrollcue { position: absolute; left: 50%; bottom: 16px; transform: translateX(-50%); }
.scrollcue i { display: block; width: 1px; height: 34px; background: linear-gradient(var(--accent), transparent); animation: cue 2s ease-in-out infinite; transform-origin: top; }
@keyframes cue { 0% { transform: scaleY(0); } 50% { transform: scaleY(1); } 100% { transform: scaleY(1); opacity: 0; } }

/* ------------------------------------------------------------------ sections */
section.block { padding-block: clamp(64px, 9vw, 124px); }
.head2 { display: grid; gap: 14px; justify-items: start; max-width: 900px; }
.head2.center { margin-inline: auto; justify-items: center; text-align: center; }
h2 { margin: 0; font: 650 clamp(32px, 5vw, 64px)/1.02 var(--sans); letter-spacing: -.035em; text-wrap: balance; }
h2 em { font-style: normal; color: var(--accent); }
h2 em.nb, h2 .nw { white-space: nowrap; }
h2.two { font-size: clamp(30px, 3.6vw, 52px); }
h2.two > span, h2.two > em { display: block; }
.lede { margin: 0; max-width: 60ch; font-size: clamp(17px, 1.6vw, 20px); color: var(--muted); text-wrap: pretty; }

/* ------------------------------------------------------------------ film */
.film { padding-top: clamp(40px, 6vw, 80px); }
.film .frame { position: relative; aspect-ratio: 16 / 9; border-radius: 18px; overflow: hidden; background: #050B0C; box-shadow: var(--shadow-lg); border: 1px solid var(--line-2); }
.film video { width: 100%; height: 100%; object-fit: cover; }
.film .cover { all: unset; position: absolute; inset: 0; cursor: pointer; display: grid; place-items: center; background: linear-gradient(180deg, rgba(0, 0, 0, 0) 40%, rgba(0, 0, 0, .45)); }
.film .cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.film .play { position: relative; width: 92px; height: 92px; border-radius: 50%; display: grid; place-items: center; background: rgba(204, 255, 160, .92); box-shadow: 0 0 0 10px rgba(204, 255, 160, .18), 0 20px 50px rgba(0, 0, 0, .4); transition: transform .25s var(--ease); }
.film .cover:hover .play { transform: scale(1.06); }
.film .play::after { content: ""; margin-left: 7px; border-left: 26px solid #0B1406; border-block: 16px solid transparent; }
.film .cover .len { position: absolute; left: 22px; bottom: 18px; font: 500 13.5px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: #F2F3EE; }
.note { margin-top: 18px; display: grid; grid-template-columns: 7em repeat(2, minmax(0, 1fr)); gap: 10px 28px; align-items: baseline; padding: 18px 22px; border-radius: 14px; background: var(--glass); border: 1px solid var(--line); border-left: 3px solid var(--accent); }
.note .k { font: 500 12.5px/1.4 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--accent); }
.note p { margin: 0; font-size: 15.5px; line-height: 1.55; color: var(--ink-2); }
.note p b { color: var(--ink); font-weight: 600; }
@media (max-width: 860px) { .note { grid-template-columns: minmax(0, 1fr); } }
.chapters { margin-top: 14px; display: flex; flex-wrap: wrap; gap: 8px; }
.chapters button { all: unset; cursor: pointer; display: inline-flex; gap: 8px; align-items: baseline; padding: 8px 12px; border-radius: 999px; border: 1px solid var(--line); background: rgba(10, 24, 26, .6); font: 500 14.5px/1 var(--sans); color: var(--ink-2); transition: border-color .2s, background .2s; }
.chapters button i { font: 500 12.5px/1 var(--mono); font-style: normal; color: var(--muted); }
.chapters button:hover { border-color: var(--accent); }
.chapters button.on { background: var(--hl); border-color: var(--hl); color: var(--on-hl); }
.chapters button.on i { color: var(--on-hl); }

/* ------------------------------------------------------------------ pillars */
.pillars .wrap { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
.pl { padding: 22px 20px; border-radius: 16px; background: var(--glass); border: 1px solid var(--line); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); display: grid; gap: 8px; align-content: start; }
.pl svg { width: 34px; height: 34px; fill: none; stroke: var(--accent); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.pl svg .ic-fast { fill: rgba(204, 255, 160, .16); }
.pl b { font: 650 clamp(18px, calc(2.6vw - 9.4px), 22px)/1.1 var(--sans); letter-spacing: -.02em; }
.pl span { font-size: 14px; line-height: 1.4; color: var(--ink-2); }
/* from 1101 px each card is as wide as two lines of its text need (measured at 14px) */
@media (min-width: 1101px) { .pillars .wrap { display: flex; } .pl { flex: var(--g, 1) 1 0; min-width: 0; padding: 20px 16px; }
  .pl:nth-child(1) { --g: .82; } .pl:nth-child(2) { --g: 2.1; } .pl:nth-child(3) { --g: 1.7; } .pl:nth-child(4) { --g: 1.68; } .pl:nth-child(5) { --g: 2.5; } }
@media (min-width: 1101px) and (max-width: 1300px) { .pl span { font-size: 13.5px; } }
@media (max-width: 1100px) { .pillars .wrap { grid-template-columns: repeat(3, minmax(0, 1fr)); } .pl.data { grid-column: span 2; } .pl b { font-size: clamp(20px, 2.4vw, 24px); } }
@media (max-width: 640px) { .pillars .wrap { grid-template-columns: repeat(2, minmax(0, 1fr)); } .pl.data { grid-column: 1 / -1; } .pl b { font-size: clamp(16px, calc(6.94vw - 8.75px), 20px); } }

/* ------------------------------------------------------------------ code player */
.tabs { display: inline-flex; gap: 4px; padding: 4px; border-radius: 999px; background: rgba(6, 15, 16, .6); border: 1px solid var(--line); }
.tabs button { all: unset; cursor: pointer; padding: 9px 16px; border-radius: 999px; font: 500 15px/1 var(--sans); color: var(--muted); white-space: nowrap; transition: background .2s, color .2s; }
.tabs button i { font: 500 13px/1 var(--mono); font-style: normal; opacity: .75; margin-left: 6px; }
.tabs button[aria-selected="true"] { background: var(--hl); color: var(--on-hl); }
@media (max-width: 520px) { .tabs button { padding: 9px 13px; } }
@media (max-width: 440px) { .tabs button i { display: none; } }
.bar { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 14px; align-items: center; justify-content: space-between; }

.player { margin-top: 16px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr); gap: 16px; align-items: stretch; }
@media (min-width: 961px) { .player .code { contain: size; } .player .code pre { min-height: 0; overflow: auto; scrollbar-width: thin; } }
@media (max-width: 960px) { .player { grid-template-columns: minmax(0, 1fr); } .player .code { order: 2; } }
.code { background: var(--code-bg); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--shadow); display: flex; flex-direction: column; min-width: 0; overflow: hidden; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.code .file { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--line); font: 500 13.5px/1 var(--mono); color: var(--muted); }
.code .file .dots { display: inline-flex; gap: 5px; }
.code .file .dots i { width: 9px; height: 9px; border-radius: 50%; background: var(--line-2); }
.code .file b { color: var(--ink); font-weight: 500; }
.code .file .rt { margin-left: auto; display: inline-flex; gap: 6px; align-items: center; }
.code .file .rt::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: var(--glow); animation: blink 1.6s steps(2) infinite; }
@media (max-width: 420px) { .code .file > span:not([class]) { display: none; } }
@keyframes blink { 50% { opacity: .2; } }
.code pre { margin: 0; padding: 12px 0 14px; font: 400 13.5px/1.6 var(--mono); color: var(--code-ink); overflow-x: auto; flex: 1; }
.code .ln { display: flex; position: relative; padding-right: 16px; transition: background .25s, color .25s; }
.code .ln .n { flex: none; width: 44px; padding-right: 14px; text-align: right; color: var(--code-dim); user-select: none; transition: color .25s; }
.code .ln .tx { white-space: pre; }
.code .ln.dim .tx { opacity: .55; }
.code .ln.ran .n { color: var(--accent); }
.code .ln.ran::before { content: ""; position: absolute; left: 0; top: 4px; bottom: 4px; width: 2px; background: var(--accent); opacity: .35; }
.code .ln.on { background: rgba(204, 255, 160, .16); }
.code .ln.on::before { opacity: 1; width: 3px; }
.code .ln.on .n { color: var(--accent); font-weight: 600; }
.code .ln.read { background: rgba(64, 190, 160, .22); }
.code .ln.read::before { background: var(--teal); opacity: 1; width: 3px; }
.code .ln.fail { background: rgba(255, 122, 102, .2); }
.code .ln.fail::before { background: var(--bad); opacity: 1; width: 3px; }
.code .ln.back { background: rgba(255, 158, 112, .2); }
.code .ln.back::before { background: var(--orange); opacity: 1; width: 3px; }
.code .ln .badge { position: absolute; right: 12px; top: 50%; transform: translateY(-50%); font: 600 13px/1 var(--mono); padding: 5px 8px; border-radius: 4px; white-space: nowrap; box-shadow: 0 0 0 4px rgba(6, 15, 16, .9); animation: bpop .3s var(--ease); }
@keyframes bpop { from { transform: translateY(-50%) scale(.7); opacity: 0; } to { transform: translateY(-50%); opacity: 1; } }
.code .ln .badge.ok { background: var(--hl); color: var(--on-hl); }
.code .ln .badge.bad { background: var(--bad); color: #1B0602; }
.code .ln .badge.rd { background: var(--teal); color: #04110E; }
.code .ln .badge.bk { background: var(--orange); color: #1B0A02; }
@keyframes pop { from { transform: scale(.7); opacity: 0; } to { transform: none; opacity: 1; } }
.tok-kw { color: var(--kw); } .tok-fn { color: var(--fn); } .tok-cm { color: var(--cm); font-style: italic; } .tok-nm { color: var(--nm); }
.code .reg { border-top: 1px solid var(--line); padding: 12px 16px 14px; display: grid; gap: 6px; background: rgba(18, 40, 42, .45); }
#caseReg { min-height: 142px; }  /* room for five rows, so the page below never shifts while the episode plays */
.code .reg .t { display: flex; justify-content: space-between; font: 500 12.5px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.code .reg .kv { display: grid; grid-template-columns: 7.2em minmax(0, 1fr); gap: 10px; font: 400 14px/1.45 var(--mono); }
.code .reg .kv span:first-child { color: var(--muted); }
.code .reg .kv span:last-child { color: var(--ink); overflow-wrap: anywhere; border-radius: 3px; }
.code .reg .kv.fresh span:last-child { animation: fresh 1.2s ease-out; }
@keyframes fresh { from { background: rgba(204, 255, 160, .8); color: var(--on-hl); } to { background: transparent; } }

.screen { position: relative; border-radius: var(--r); overflow: hidden; background: #050B0C; box-shadow: var(--shadow); min-width: 0; display: flex; flex-direction: column; border: 1px solid var(--line); }
.screen .view { position: relative; aspect-ratio: 4 / 3; overflow: hidden; }
.screen video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hud { position: absolute; inset: 0; pointer-events: none; display: flex; flex-direction: column; justify-content: space-between; padding: 14px; color: #F2F3EE; font: 500 13px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; }
.hud .row { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.hud .chip { background: rgba(6, 12, 13, .66); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); padding: 7px 10px; border-radius: 6px; display: inline-flex; gap: 8px; align-items: center; }
.hud .rec::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #FF5D4D; animation: blink 1.2s steps(2) infinite; }
.hud .cap { align-self: flex-start; text-transform: none; letter-spacing: 0; font: 500 16px/1.2 var(--sans); padding: 9px 12px; border-left: 3px solid var(--hl); }
.hud .cap.bad { border-left-color: var(--bad); color: #FFD3CB; }
.hud .cap.back { border-left-color: var(--orange); color: #FFE0CF; }
.hud .cap.ok { border-left-color: var(--hl); color: var(--hl); }
.hud .banner { position: absolute; left: 50%; top: 14%; transform: translateX(-50%); white-space: nowrap; background: rgba(64, 190, 160, .92); color: #04110E; padding: 9px 14px; border-radius: 6px; font: 600 13.5px/1 var(--mono); letter-spacing: .12em; opacity: 0; transition: opacity .3s; }
.hud .banner.on { opacity: 1; }
@media (max-width: 520px) { .hud .banner { font-size: 11.5px; letter-spacing: .06em; padding: 7px 10px; } }
@media (max-width: 420px) { .hud .banner { white-space: normal; text-align: center; width: 84%; line-height: 1.3; } }

/* marks drawn on the episode: what the program knows (slots) and what it does (the ring) */
.ar { position: absolute; inset: 0; pointer-events: none; }
.slot { position: absolute; transform: translate(-50%, 0); display: grid; justify-items: center; }
.slot .tg { position: absolute; bottom: calc(100% + 34px); left: 50%; transform: translateX(-50%); display: inline-flex; gap: 6px; align-items: center; padding: 5px 8px; border-radius: 6px; font: 600 13.5px/1 var(--mono); white-space: nowrap;
  background: rgba(6, 12, 13, .74); color: #F2F3EE; border: 1px solid rgba(242, 243, 238, .3); opacity: 0; transition: opacity .3s, background .3s, border-color .3s, color .3s, box-shadow .3s; }
.slot .tg i { width: 9px; height: 9px; border-radius: 2px; }
.slot .tg i.red { background: #FF4D4D; } .slot .tg i.blue { background: #4D7CFF; } .slot .tg i.green { background: #3BD16F; }
.slot .k { position: absolute; top: 40px; left: 50%; transform: translateX(-50%); padding: 3px 6px; border-radius: 4px; font: 700 13.5px/1 var(--mono); color: #F2F3EE; background: rgba(6, 12, 13, .72); opacity: 0; transition: opacity .3s; }
.slot.seen .tg, .slot.hidden .tg, .slot.read .tg, .slot.open .tg { opacity: 1; }
.slot.seen .k, .slot.hidden .k, .slot.read .k, .slot.open .k { opacity: .9; }
.slot.hidden .tg { border: 1px dashed var(--hl); color: var(--hl); background: rgba(11, 20, 6, .78); }
.slot.read .tg { background: var(--teal); color: #04110E; border: 1px solid var(--teal); box-shadow: 0 0 22px rgba(64, 190, 160, .75); }
.slot.open .tg { opacity: .55; }
.ring { position: absolute; width: 0; height: 0; opacity: 0; transition: opacity .25s; }
.ring.on { opacity: 1; }
.ring i { position: absolute; left: -38px; top: -38px; width: 76px; height: 76px; border-radius: 50%; border: 2.5px solid #F2F3EE; box-shadow: 0 0 0 4px rgba(0, 0, 0, .25); transition: border-color .25s, transform .3s var(--ease); }
.ring .lab { position: absolute; left: 46px; top: -15px; white-space: nowrap; padding: 7px 10px; border-radius: 6px; font: 600 14px/1 var(--mono); background: rgba(6, 12, 13, .8); color: #F2F3EE; border-left: 3px solid #F2F3EE; }
.ring .tag { position: absolute; left: 46px; top: -48px; padding: 5px 8px; border-radius: 4px; font: 700 13.5px/1 var(--mono); letter-spacing: .14em; background: var(--hl); color: var(--on-hl); opacity: 0; }
.ring.fail i { border-color: var(--bad); transform: scale(1.08); box-shadow: 0 0 26px rgba(255, 122, 102, .8); }
.ring.fail .lab { border-left-color: var(--bad); color: #FFD3CB; }
.ring.back i { border: 2.5px dashed var(--orange); animation: spin 2.4s linear infinite; }
.ring.back .lab { border-left-color: var(--orange); color: #FFE0CF; }
.ring.retry i { border: 2.5px dashed var(--hl); animation: spin 3s linear infinite reverse; }
.ring.retry .lab { border-left-color: var(--hl); }
.ring.retry .tag { opacity: 1; }
.ring.ok i { border-color: var(--hl); box-shadow: 0 0 26px rgba(204, 255, 160, .8); }
.ring.ok .lab { border-left-color: var(--hl); color: var(--hl); }
@keyframes spin { to { transform: rotate(360deg); } }
@media (max-width: 520px) { .ring i { left: -28px; top: -28px; width: 56px; height: 56px; } .ring .lab { left: 34px; font-size: 12.5px; } .ring .tag { left: 34px; } .slot .tg { font-size: 12px; bottom: calc(100% + 22px); } .slot .k { top: 22px; } }

.screen .tape2 { display: flex; gap: 5px; padding: 12px 14px 14px; background: #0B1517; overflow: hidden; border-top: 1px solid rgba(242, 243, 238, .06); }
.tape2 .lab { flex: none; display: grid; align-content: center; gap: 3px; padding-right: 6px; font: 600 11.5px/1 var(--mono); letter-spacing: .16em; color: #848E8A; }
.tape2 .lab b { color: #CCFFA0; font-weight: 600; }
.tape2 .cells { flex: 1; min-width: 0; position: relative; display: flex; gap: 5px; overflow-x: auto; scrollbar-width: none; }
.tape2 .cells::-webkit-scrollbar { display: none; }
.tape2 .c { flex: 0 0 116px; height: 38px; display: grid; place-items: center; border-radius: 5px; border: 1px dashed rgba(242, 243, 238, .14); color: transparent; font: 500 13px/1 var(--mono); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; padding: 0 4px; transition: background .3s, color .3s, border-color .3s; }
.tape2 .c.w { background: #E9EEE6; color: #0B1406; border: 1px solid #E9EEE6; }
.tape2 .c.new { animation: stamp .55s var(--ease); background: #CCFFA0; border-color: #CCFFA0; }
.tape2 .c.r { background: #40BEA0; border-color: #40BEA0; color: #04110E; box-shadow: 0 0 18px rgba(64, 190, 160, .6); }
.tape2 .c.x { background: #FFD3CB; border-color: #FF7A66; }
@media (max-width: 640px) { .tape2 .c { flex-basis: 100px; font-size: 12px; } }
.timeline { display: flex; align-items: center; gap: 12px; padding: 12px 14px; background: #0B1517; color: #C4CAC4; }
.timeline .pp { all: unset; cursor: pointer; width: 34px; height: 34px; flex: none; border-radius: 50%; background: #CCFFA0; color: #0B1406; display: grid; place-items: center; }
.timeline .pp svg { width: 13px; height: 13px; fill: currentColor; }
.scrub { position: relative; flex: 1; height: 34px; }
.scrub input { position: absolute; inset: 0; width: 100%; margin: 0; opacity: 0; cursor: pointer; z-index: 2; }
.scrub .rail { position: absolute; left: 0; right: 0; top: 15px; height: 4px; border-radius: 2px; background: rgba(242, 243, 238, .14); overflow: hidden; }
.scrub .fill { position: absolute; left: 0; top: 0; bottom: 0; background: rgba(204, 255, 160, .85); width: 0; }
.scrub .segs i { position: absolute; top: 0; bottom: 0; z-index: 1; opacity: .95; }
.scrub .segs i.bad { background: var(--bad); } .scrub .segs i.back { background: var(--orange); min-width: 4px; } .scrub .segs i.ok { background: #E8FFD2; }
.timeline .stepno { font: 500 13.5px/1 var(--mono); min-width: 96px; text-align: right; font-variant-numeric: tabular-nums; color: #C4CAC4; }

/* ------------------------------------------------------------------ no model in the loop: a part of the film */
.clip { margin-top: 30px; aspect-ratio: 16 / 9; border-radius: 18px; overflow: hidden; background: #050B0C; box-shadow: var(--shadow-lg); border: 1px solid var(--line-2); }
.clip video { display: block; width: 100%; height: 100%; object-fit: cover; }
/* ------------------------------------------------------------------ gallery */
.filters { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 8px; }
.filters button { all: unset; cursor: pointer; padding: 9px 14px; border-radius: 999px; border: 1px solid var(--line-2); background: rgba(10, 24, 26, .6); font: 500 14.5px/1 var(--sans); color: var(--ink-2); transition: all .2s; }
.filters button i { font: 500 12.5px/1 var(--mono); font-style: normal; color: var(--muted); margin-left: 5px; }
.filters button[aria-pressed="true"] { background: var(--hl); color: var(--on-hl); border-color: var(--hl); }
.filters button[aria-pressed="true"] i { color: var(--on-hl); opacity: .7; }
/* film strips inside the content width, faded at both ends; the sprocket holes ride with the frames */
.reel { --tw: clamp(200px, 21vw, 270px); margin-top: 24px; -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent); }
.marq { display: grid; gap: 14px; }
.mrow { overflow: hidden; background: rgba(3, 8, 9, .88); border-block: 1px solid rgba(242, 243, 238, .07); }
.mtrack { display: flex; gap: 12px; width: max-content; padding: 22px 0; animation: marq var(--dur, 80s) linear infinite;
  --holes: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='9'%3E%3Crect x='5' width='10' height='9' rx='2.2' fill='%23E8EEE6' fill-opacity='.22'/%3E%3C/svg%3E");
  background: var(--holes) 0 7px / calc((var(--tw) + 12px) / 12) 9px repeat-x, var(--holes) 0 calc(100% - 7px) / calc((var(--tw) + 12px) / 12) 9px repeat-x; }
.mrow.rev .mtrack { animation-direction: reverse; }
.mrow:hover .mtrack, .mrow:focus-within .mtrack { animation-play-state: paused; }
@keyframes marq { to { transform: translateX(-50%); } }
.tile { all: unset; cursor: pointer; position: relative; flex: none; width: var(--tw, clamp(200px, 21vw, 280px)); aspect-ratio: 4 / 3; border-radius: 4px; overflow: hidden; background: var(--cell); box-shadow: var(--shadow); transition: transform .3s var(--ease), box-shadow .3s; }
.tile:hover, .tile:focus-visible { transform: scale(1.03); box-shadow: var(--shadow-lg); }
.tile img, .tile video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.tile .meta { position: absolute; left: 0; right: 0; bottom: 0; padding: 26px 10px 9px; display: flex; justify-content: space-between; align-items: flex-end; gap: 8px; background: linear-gradient(transparent, rgba(4, 9, 10, .82)); color: #F2F3EE; }
.tile .meta b { font: 500 14.5px/1.2 var(--sans); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tile .meta span { flex: none; font: 600 12.5px/1 var(--mono); padding: 4px 6px; border-radius: 4px; background: rgba(204, 255, 160, .92); color: #0B1406; }

.lb { position: fixed; inset: 0; z-index: 80; display: grid; place-items: center; padding: 20px var(--gutter); background: rgba(4, 9, 10, .86); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.lb .box { width: min(980px, 100%); display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); border-radius: 18px; overflow: hidden; background: #0B1517; border: 1px solid var(--line-2); box-shadow: var(--shadow-lg); }
.lb video { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: #000; }
.lb .info { padding: 22px; display: grid; align-content: start; gap: 12px; }
.lb .info .k { font: 500 12.5px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.lb .info h3 { margin: 0; font: 500 26px/1.1 var(--sans); letter-spacing: -.02em; }
.lb .info p { margin: 0; color: var(--ink-2); font-size: 16px; }
.lb .info .rate { font: 600 40px/1 var(--sans); letter-spacing: -.03em; color: var(--accent); }
.lb .info .rate small { display: block; margin-top: 6px; font: 500 12.5px/1.3 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.lb .nav2 { display: flex; gap: 8px; margin-top: 6px; }
@media (max-width: 760px) { .lb .box { grid-template-columns: minmax(0, 1fr); } }

/* ------------------------------------------------------------------ results */
.score { margin-top: 30px; display: grid; justify-items: center; gap: 18px; }
.digits { display: flex; gap: clamp(4px, .8vw, 10px); position: relative; padding-top: 30px; }
.digits .d { width: clamp(46px, 9vw, 112px); height: clamp(70px, 13vw, 160px); border-radius: clamp(8px, 1.2vw, 14px); display: grid; place-items: center; background: rgba(15, 33, 35, .9); border: 1px solid var(--tape-line); font: 600 clamp(44px, 9vw, 116px)/1 var(--mono); color: #CCFFA0; text-shadow: 0 0 26px rgba(204, 255, 160, .45); font-variant-numeric: tabular-nums; box-shadow: var(--shadow); }
.digits .d.p { width: clamp(22px, 4vw, 50px); background: transparent; border-color: transparent; box-shadow: none; }
.digits .d.hot { background: var(--hl); color: #0B1406; text-shadow: none; border-color: var(--accent); box-shadow: var(--glow); }
.digits .hd { position: absolute; top: 0; left: 0; width: clamp(46px, 9vw, 112px); height: 22px; transition: transform .25s var(--ease); }
.digits .hd::after { content: ""; position: absolute; left: 50%; top: 0; transform: translateX(-50%); border: 9px solid transparent; border-top: 12px solid var(--accent); }
.score .cap { font: 500 14.5px/1.5 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); text-align: center; }
.score .cap b { color: var(--ink); font-weight: 600; }
.dims { margin: 48px auto 0; max-width: 1000px; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; }
@media (max-width: 900px) { .dims { grid-template-columns: repeat(2, minmax(0, 1fr)); } .dims .dm:last-child { grid-column: 1 / -1; } }
.dm { padding: 18px 16px 16px; border-radius: 14px; background: var(--glass); border: 1px solid var(--line); display: grid; gap: 10px; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); }
.dm span { font: 500 12.5px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.dm b { font: 650 clamp(30px, 3.4vw, 42px)/1 var(--sans); letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.dm b small { font-size: .5em; color: var(--muted); font-weight: 500; }
.dm .tr { height: 6px; border-radius: 3px; background: rgba(242, 243, 238, .08); overflow: hidden; }
.dm .tr i { display: block; height: 100%; width: 0; border-radius: 3px; background: var(--hl); box-shadow: var(--glow); transition: width 1.2s var(--ease); }

/* ------------------------------------------------------------------ why code */
.bento { margin-top: 36px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
@media (max-width: 1080px) { .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .bento { grid-template-columns: minmax(0, 1fr); } }
.card { border-radius: 18px; padding: 20px; background: var(--glass); border: 1px solid var(--line); box-shadow: var(--shadow); display: grid; grid-template-rows: auto 112px auto auto; gap: 12px; align-content: start; position: relative; overflow: hidden; backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
.card .k { font: 600 13.5px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--accent); }
.card .big { font: 650 clamp(40px, 4.2vw, 56px)/1 var(--sans); letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.card .big small { font-size: .45em; letter-spacing: -.01em; color: var(--muted); font-weight: 500; }
.card .big span { margin-left: 10px; font: 500 17px/1.2 var(--sans); letter-spacing: 0; color: var(--ink-2); }
.mem .st8 { position: relative; display: flex; justify-content: center; gap: 6px; padding-top: 26px; }
.mem .st8 i { width: 34px; height: 42px; border-radius: 5px; border: 1px solid var(--line-2); background: rgba(242, 243, 238, .05); }
.mem .st8 i.on { background: var(--hl); border-color: var(--accent); box-shadow: var(--glow); animation: stpulse 2.4s ease-in-out infinite; }
.mem .st8 b { position: absolute; top: 0; left: 50%; transform: translateX(-50%); font: 600 12px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--accent); white-space: nowrap; }
.mem .st8 b::after { content: ""; position: absolute; left: 50%; top: 15px; transform: translateX(-50%); border: 5px solid transparent; border-top: 6px solid var(--accent); }
@keyframes stpulse { 0%, 100% { filter: none; } 50% { filter: brightness(1.18); } }
.card p { margin: 0; font-size: 16px; color: var(--ink-2); line-height: 1.45; }
.card .viz { position: relative; min-width: 0; display: grid; align-content: center; }
.card.wide { grid-column: 1 / -1; grid-template-rows: none; grid-template-columns: 9em minmax(0, 1fr); align-items: center; gap: 18px; }
.card.wide p { font-size: 16px; color: var(--ink); }
@media (max-width: 560px) { .card.wide { grid-template-columns: minmax(0, 1fr); } }
/* memory: cubes go under cups, the tape keeps them */
/* controllable: fail, go back to the last state, take another way */
.ctl svg.back { width: 100%; height: auto; overflow: visible; }
.ctl .back .ln { stroke: rgba(242, 243, 238, .35); stroke-width: 2.5; fill: none; }
.ctl .back .ln.ok { stroke: var(--hl); }
.ctl .back .arc { stroke: var(--orange); stroke-width: 2.5; fill: none; stroke-dasharray: 6 5; animation: dash 1.2s linear infinite; }
@keyframes dash { to { stroke-dashoffset: -22; } }
.ctl .back .n { fill: #12292B; stroke: rgba(242, 243, 238, .5); stroke-width: 2; }
.ctl .back .n.x { stroke: var(--bad); } .ctl .back .n.v { stroke: var(--hl); fill: rgba(204, 255, 160, .15); }
.ctl .back text { font: 700 14.5px/1 var(--mono); fill: var(--bad); text-anchor: middle; dominant-baseline: central; }
.ctl .back text.t2 { fill: var(--hl); }
.ctl .back text.lb { font: 600 15.5px/1 var(--mono); fill: var(--orange); letter-spacing: .06em; }
.ctl .back .dot { fill: var(--hl); filter: drop-shadow(0 0 6px rgba(204, 255, 160, .9)); }
/* cheap: a sliver of the others' compute */
.cheap .cmp { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px 10px; align-items: center; margin: 6px 0; }
.cheap .cmp span { font: 500 13px/1 var(--mono); color: var(--muted); }
.cheap .cmp b { grid-row: 1 / 3; grid-column: 2; font: 650 18px/1 var(--mono); color: var(--accent); }
.cheap .cmp .tr { height: 12px; border-radius: 6px; background: rgba(242, 243, 238, .12); overflow: hidden; }
.cheap .cmp .tr i { display: block; height: 100%; min-width: 3px; border-radius: 6px; background: var(--hl); box-shadow: var(--glow); }
/* shared: new tasks, measured */
.ext svg.trend { width: 100%; height: 112px; overflow: visible; }
.trend .ax { stroke: rgba(242, 243, 238, .18); stroke-width: 1; }
.trend .gr { stroke: rgba(242, 243, 238, .07); stroke-width: 1; }
.trend .cv { fill: none; stroke: var(--hl); stroke-width: 2.6; stroke-linejoin: round; filter: drop-shadow(0 0 6px rgba(204, 255, 160, .5)); stroke-dasharray: 600; stroke-dashoffset: 600; }
.trend .ar2 { fill: rgba(204, 255, 160, .1); }
.trend.in .cv { animation: drawc 2.2s var(--ease) forwards; }
@keyframes drawc { to { stroke-dashoffset: 0; } }
.trend text { font: 500 14.5px/1 var(--mono); fill: var(--muted); }
.trend text.v { font: 700 17px/1 var(--mono); fill: var(--hl); }
.data .k { align-self: center; }

/* ------------------------------------------------------------------ rsi: branches in parallel */
.tree { position: relative; margin-top: 36px; padding: 26px clamp(12px, 2vw, 26px) 22px; border-radius: 20px; background: var(--glass); border: 1px solid var(--line-2); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); display: grid; justify-items: center; gap: 46px; overflow: hidden; }
.tree .links { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.tree .links path { fill: none; stroke: rgba(242, 243, 238, .24); stroke-width: 1.6; stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset 1s var(--ease), stroke .4s, stroke-width .4s; }
.tree.s1 .links path.l1, .tree .links path.sub.on { stroke-dashoffset: 0; }
.tree.s2 .links path.l1:not(.kept) { stroke: rgba(242, 243, 238, .1); }
.tree .links path.kept { stroke: var(--hl); stroke-width: 2.6; filter: drop-shadow(0 0 5px rgba(204, 255, 160, .6)); }
.tree .root { position: relative; z-index: 1; width: 170px; border-radius: 12px; overflow: hidden; border: 2px solid var(--line-2); background: var(--cell); }
.tree .root video { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.tree .root span { position: absolute; left: 0; right: 0; bottom: 0; padding: 6px 8px; font: 600 12.5px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--accent); background: rgba(6, 14, 15, .7); text-align: center; }
.tree .branches { position: relative; z-index: 1; width: 100%; display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 10px; }
@media (max-width: 900px) { .tree .branches { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.br { position: relative; border-radius: 10px; overflow: hidden; background: var(--cell); border: 1px solid rgba(242, 243, 238, .12); opacity: 0; transform: translateY(8px); transition: opacity .5s, transform .5s var(--ease), border-color .4s, box-shadow .4s, filter .4s; }
.tree.s1 .br { opacity: 1; transform: none; }
.br video, .br img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.br .nm { padding: 7px 8px 8px; font: 600 13px/1.2 var(--sans); color: var(--ink); }
.br .nm small { display: block; margin-top: 2px; font: 400 12px/1.2 var(--sans); color: var(--muted); }
@media (max-width: 520px) { .br .nm { font-size: 12px; padding: 6px 6px 7px; } .br .nm small { display: none; } }
.br .pg { position: absolute; left: 0; top: 0; height: 3px; width: 0; background: var(--teal); }
.tree.s1 .br .pg { width: 100%; transition: width 2.2s linear; }
.tree.s2 .br .pg { opacity: 0; }
.tree.s2 .br:not(.kept) { filter: grayscale(.9) brightness(.55); }
.tree.s2 .br.kept { border: 2px solid var(--hl); box-shadow: var(--glow); }
.br .kt { position: absolute; right: 6px; top: 6px; padding: 4px 6px; border-radius: 4px; font: 700 11.5px/1 var(--mono); letter-spacing: .1em; background: var(--hl); color: var(--on-hl); opacity: 0; transition: opacity .3s; }
.tree.s2 .br.kept .kt { opacity: 1; }
.tree .deeper { position: relative; z-index: 1; display: grid; gap: 44px; justify-items: center; }
.dec { position: relative; opacity: .25; transition: opacity .4s; }
.dec span { position: absolute; right: calc(100% + 16px); top: 50%; transform: translateY(-50%); font: 600 14px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
.dec .nodes { display: flex; gap: 12px; }
.dec .nodes i { width: 26px; height: 26px; border-radius: 50%; border: 2px solid rgba(242, 243, 238, .35); background: var(--cell); transition: background .4s, border-color .4s, box-shadow .4s, opacity .4s; }
.dec.run { opacity: 1; }
.dec.run .nodes i { border-color: var(--teal); animation: blink 1s steps(2) infinite; }
.dec.done { opacity: 1; }
.dec.done .nodes i { opacity: .45; animation: none; border-color: rgba(242, 243, 238, .3); }
.dec.done .nodes i.kept { opacity: 1; background: var(--hl); border-color: var(--hl); box-shadow: var(--glow); }
.dec.done span { color: var(--accent); }
.tree .when { position: relative; z-index: 1; display: flex; flex-wrap: wrap; gap: 10px 26px; justify-content: center; font: 500 14px/1.3 var(--mono); color: var(--muted); }
.tree .when span { display: inline-flex; gap: 8px; align-items: baseline; }
.tree .when b { font: 700 20px/1 var(--mono); color: var(--accent); }
.tree .when span + span b { color: var(--ink-2); }

/* ------------------------------------------------------------------ paper */
.paper { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 28px; align-items: start; }
@media (max-width: 900px) { .paper { grid-template-columns: minmax(0, 1fr); } }
.ptitle { font: 600 clamp(26px, 3vw, 38px)/1.1 var(--sans); letter-spacing: -.03em; margin: 0; }
.ptitle span { display: block; margin-top: 8px; font-size: .55em; letter-spacing: -.01em; color: var(--muted); font-weight: 400; }
.paper .authors { text-align: left; text-shadow: none; }
.logos { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 30px; align-items: center; }
.logos .ntu { height: 52px; width: auto; }
.logos .rop { height: 36px; width: auto; }
.bib { position: relative; border-radius: 14px; background: var(--code-bg); border: 1px solid var(--line); box-shadow: var(--shadow); min-width: 0; }
.bib pre { margin: 0; padding: 20px; overflow-x: auto; font: 400 14px/1.65 var(--mono); color: var(--code-ink); }
.bib .copy { position: absolute; top: 12px; right: 12px; height: 32px; padding: 0 12px; font-size: 14px; }
/* sections rise into place but are readable before any script runs */
.rv { transform: translateY(14px); transition: transform .8s var(--ease); }
.rv.in { transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .rv { transform: none; }
  .mtrack { flex-wrap: wrap; width: auto; }
  .mrow { mask-image: none; -webkit-mask-image: none; }
  .trend .cv { stroke-dashoffset: 0; }
  .tree .br { opacity: 1; transform: none; }
  .tree .links path { stroke-dashoffset: 0; }
}