*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; }
img, svg, canvas { max-width: 100%; }
[hidden] { display: none !important; }
:root {
  --page: #0E0F13;
  --cell: #121318;
  --cell-2: #171820;
  --line: #262833;
  --line-2: #33364A;
  --ink: #E8E9EE;
  --muted: #8A8D9B;
  --faint: #5C5F70;
  --ravel: #5B6EE1;
  --ravel-soft: #8C9AF0;
  --red: #FF5257;
  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-accent: "Instrument Serif", "Iowan Old Style", Georgia, serif;
  --font-ui: "Geist", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --frame: 1180px;
  color-scheme: dark;
}
html { scroll-behavior: smooth; }
body { background: var(--page); color: var(--ink); font: 15px/1.6 var(--font-ui); -webkit-font-smoothing: antialiased; padding-inline: 16px; }
h1, h2, h3 { text-wrap: balance; margin: 0; }
p { margin: 0; }
a { color: inherit; }
code, .mono { font-family: var(--font-mono); }
:focus-visible { outline: 2px solid var(--ravel); outline-offset: 2px; }

/* ---------- labels: the drawing's lettering ---------- */
.lbl { font: 500 11px/1 var(--font-mono); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.lbl b { font-weight: 500; color: var(--ink); }
.lbl i { font-style: normal; color: var(--faint); }

/* ---------- ticker ---------- */
.ticker { margin-inline: -16px; border-bottom: 1px solid var(--line); overflow: hidden; white-space: nowrap; }
.ticker-track { display: inline-flex; animation: tick 60s linear infinite; }
.ticker span { display: inline-flex; align-items: center; gap: 28px; padding: 14px 14px; }
.ticker span::before { content: ""; width: 5px; height: 5px; background: var(--ravel); }
@keyframes tick { to { transform: translateX(-50%); } }

/* ---------- the frame ---------- */
.frame { max-width: var(--frame); margin: 0 auto; border-inline: 1px solid var(--line); }
.sheet { position: relative; border-bottom: 1px solid var(--line); }
.sheet::before, .sheet::after {
  content: ""; position: absolute; top: -6px; width: 11px; height: 11px; pointer-events: none; z-index: 2;
  background: linear-gradient(var(--faint), var(--faint)) center / 1px 100% no-repeat,
              linear-gradient(var(--faint), var(--faint)) center / 100% 1px no-repeat;
}
.sheet::before { left: -6px; } .sheet::after { right: -6px; }
.bar { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 14px 24px; border-bottom: 1px solid var(--line); min-width: 0; }
.bar .lbl:last-child { text-align: right; }
@media (max-width: 640px) { .bar { padding-inline: 16px; } .bar .lbl:last-child { display: none; } }

/* ---------- nav ---------- */
.nav { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 18px 24px; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 700 15px/1 var(--font-display); font-stretch: 125%; letter-spacing: 0.02em; text-transform: uppercase; }
.brand svg { width: 20px; height: 20px; }
.nav ul { display: flex; gap: 26px; list-style: none; margin: 0; padding: 0; }
.nav ul a { text-decoration: none; } .nav ul a:hover { color: var(--ink); }
@media (max-width: 640px) { .nav { padding-inline: 16px; } .nav ul li:not(:last-child) { display: none; } }

.btn { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; cursor: pointer; font: 600 12px/1 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; padding: 14px 18px; border: 1px solid var(--line-2); }
.btn.primary { background: var(--ravel); border-color: var(--ravel); color: #F2F9FF; }
.btn.primary:hover { background: #6C7EEA; }
.btn.ghost:hover { background: var(--cell-2); }
.ctas { display: flex; flex-wrap: wrap; gap: 10px; }

/* ---------- hero ---------- */
.hero { display: grid; gap: 28px; padding: clamp(48px, 8vw, 104px) 24px clamp(40px, 6vw, 72px); }
@media (max-width: 640px) { .hero { padding-inline: 16px; } }
h1 { font: 700 clamp(40px, 6.6vw, 84px)/0.98 var(--font-display); font-stretch: 118%; letter-spacing: -0.03em; max-width: 15ch; }
h1 em, h2 em { font: 400 1.08em/1 var(--font-accent); font-style: italic; letter-spacing: -0.01em; color: var(--ravel-soft); }
.lede { font-size: 18px; color: var(--muted); max-width: 54ch; }

/* ---------- node graph ---------- */
.graph {
  position: relative; min-width: 0; background-color: var(--cell);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px),
    radial-gradient(#22242E 1px, transparent 1.2px);
  background-size: 96px 96px, 96px 96px, 16px 16px;
  background-position: -1px -1px, -1px -1px, 0 0;
}
.graph svg.wires { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; overflow: visible; }
.wires path { fill: none; stroke-width: 1.5; }
.wires .base { stroke: #4A4F7A; }
.wires .flow { stroke: var(--ravel-soft); stroke-dasharray: 2 14; stroke-linecap: round; stroke-width: 3; animation: flow 1.1s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -16; } }
.node { position: absolute; width: 180px; font-size: 12px; background: #17181F; border: 1px solid var(--line-2); box-shadow: 0 10px 24px #0007; user-select: none; touch-action: none; }
.node.dragging { border-color: var(--ravel); z-index: 3; }
.node header { display: flex; flex-direction: column; gap: 3px; padding: 8px 10px 7px; cursor: grab; border-bottom: 1px solid var(--line-2); background: #1C1D26; }
.node.dragging header { cursor: grabbing; }
.node header b { font: 600 11px/1.2 var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink); }
.node header code { font-size: 10.5px; color: var(--muted); }
.node .params { display: grid; gap: 7px; padding: 9px 10px 11px; }
.node label { display: grid; grid-template-columns: 52px 1fr 32px; align-items: center; gap: 6px; color: var(--muted); font: 10.5px var(--font-mono); }
.node output { text-align: right; color: var(--ink); font-variant-numeric: tabular-nums; }
.node input[type="range"] { width: 100%; min-width: 0; accent-color: var(--ravel); height: 14px; margin: 0; }
.node.viewer-node { width: min(440px, 36%); }
.node.viewer-node .viewer { aspect-ratio: 16 / 10; margin: 0 10px 10px; border: 1px solid var(--line-2); }
.port { position: absolute; top: 16px; width: 9px; height: 9px; background: #17181F; border: 1.5px solid var(--ravel-soft); }
.port.in { left: -5px; } .port.out { right: -5px; background: var(--ravel-soft); }
.stage { height: 500px; }
.stage.narrow { height: auto; display: flex; flex-direction: column; align-items: center; gap: 26px; padding: 22px 16px; }
.stage.narrow .node { position: relative; left: auto !important; top: auto !important; width: min(300px, 100%); }
.stage.narrow .node header { cursor: default; }
.stage.narrow .port { top: auto; left: calc(50% - 5px); right: auto; }
.stage.narrow .port.in { top: -5px; } .stage.narrow .port.out { bottom: -5px; }

.viewer { position: relative; min-width: 0; background: #08090C; }
.viewer canvas { display: block; width: 100%; height: 100%; }
.hud { position: absolute; left: 8px; bottom: 6px; font: 10px/1 var(--font-mono); color: var(--muted); font-variant-numeric: tabular-nums; pointer-events: none; }

/* ---------- details grid (node families) ---------- */
.details { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); }
@media (max-width: 760px) { .details { grid-template-columns: 1fr; } }
.detail { background: var(--cell); display: flex; flex-direction: column; min-width: 0; }
.detail .bar { padding-inline: 20px; }
.detail .bar .lbl:first-child { display: flex; align-items: center; gap: 10px; }
.detail .bar .lbl:first-child::before { content: ""; width: 7px; height: 7px; border: 1.5px solid var(--ravel-soft); }
.detail:hover .bar .lbl:first-child::before { background: var(--ravel-soft); }
.detail .art { position: relative; aspect-ratio: 16 / 8; background: #0A0B0F; border-bottom: 1px solid var(--line); overflow: hidden; }
.detail .art canvas { display: block; width: 100%; height: 100%; }
.detail .art pre { margin: 0; padding: 22px 20px; height: 100%; overflow: auto; font: 12.5px/1.75 var(--font-mono); color: var(--muted); }
.detail .art pre b { color: var(--ink); font-weight: 400; } .detail .art pre i { font-style: normal; color: var(--ravel-soft); }
.detail .txt { display: grid; gap: 8px; padding: 22px 20px 28px; }
.detail h3 { font: 600 22px/1.15 var(--font-display); font-stretch: 112%; letter-spacing: -0.01em; }
.detail p { color: var(--muted); max-width: 52ch; }

/* ---------- intro row inside a sheet ---------- */
.intro { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px 48px; align-items: end; padding: 56px 24px 40px; }
.intro h2 { font: 700 clamp(28px, 3.8vw, 46px)/1.02 var(--font-display); font-stretch: 116%; letter-spacing: -0.025em; }
.intro p { color: var(--muted); max-width: 54ch; }
@media (max-width: 760px) { .intro { grid-template-columns: 1fr; padding-inline: 16px; } }

/* ---------- timeline ⇄ graph ---------- */
.tg-bar { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 24px; border-block: 1px solid var(--line); }
.seg { display: inline-flex; border: 1px solid var(--line-2); }
.seg button { font: 500 11px/1 var(--font-mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); background: none; border: 0; padding: 10px 14px; cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--ravel); color: #F2F9FF; }
.tg-body { overflow-x: auto; background: var(--cell); }
.tl { min-width: 640px; padding: 16px 24px 22px; display: grid; gap: 6px; font-size: 13px; }
.tl-ruler, .tl-row { display: grid; grid-template-columns: 170px 1fr; align-items: center; gap: 12px; }
.tl-ruler .ticks { display: flex; justify-content: space-between; font: 10.5px var(--font-mono); color: var(--faint); }
.tl-row .name { display: flex; flex-direction: column; line-height: 1.25; }
.tl-row .name small { color: var(--muted); font: 10.5px var(--font-mono); }
.tl-row .lane { position: relative; height: 30px; background: var(--cell-2); }
.tl-row .clip { position: absolute; top: 4px; bottom: 4px; background: color-mix(in srgb, var(--c) 26%, var(--cell)); border-left: 2px solid var(--c); }
.tl-lanes { position: relative; display: grid; gap: 6px; }
.playhead { position: absolute; top: -6px; bottom: -6px; left: calc(182px + (100% - 182px) * .42); width: 1px; background: var(--red); }
.playhead::before { content: ""; position: absolute; top: 0; left: -4px; width: 9px; height: 9px; background: var(--red); }
.gr { min-width: 640px; padding: 14px 24px; }
.gr svg { display: block; width: 100%; height: auto; }
.gr .gn rect { fill: var(--cell-2); stroke: var(--line-2); }
.gr .gn text { fill: var(--ink); font: 600 11px var(--font-mono); letter-spacing: 0.1em; text-transform: uppercase; }
.gr .gn text.t { fill: var(--muted); font: 10.5px var(--font-mono); letter-spacing: 0; text-transform: none; }
.gr path { fill: none; stroke: var(--ravel-soft); stroke-width: 1.5; }
.gr .p { fill: var(--ravel-soft); }

/* ---------- get it: render node + title block ---------- */
.get { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 1px; background: var(--line); }
@media (max-width: 860px) { .get { grid-template-columns: 1fr; } }
.get > div { background: var(--cell); padding: 32px 24px; min-width: 0; }
.render { position: relative; max-width: 480px; border: 1px solid var(--line-2); background: var(--cell-2); }
.render header { padding: 10px 14px; border-bottom: 1px solid var(--line-2); display: flex; justify-content: space-between; gap: 10px; }
.render dl { margin: 0; padding: 14px; display: grid; grid-template-columns: 74px 1fr; gap: 7px 12px; font: 12px var(--font-mono); }
.render dt { color: var(--muted); } .render dd { margin: 0; overflow-wrap: anywhere; }
.render .outs { display: flex; flex-wrap: wrap; gap: 10px; padding: 0 14px 14px; }
.render .port { top: 13px; }
.cmd { margin-top: 18px; max-width: 480px; overflow-x: auto; padding: 12px 14px; border: 1px dashed var(--line-2); font: 12px/1.6 var(--font-mono); color: var(--muted); white-space: pre; }
.cmd b { color: var(--ink); font-weight: 400; }
.tb { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: 1px solid var(--line-2); align-self: start; }
.tb div { padding: 12px 14px; border-right: 1px solid var(--line-2); border-bottom: 1px solid var(--line-2); display: grid; gap: 6px; min-width: 0; }
.tb div:nth-child(2n) { border-right: 0; }
.tb div:nth-last-child(-n+2) { border-bottom: 0; }
.tb div.wide { grid-column: 1 / -1; border-right: 0; }
.tb .v { font: 600 14px/1.3 var(--font-display); font-stretch: 110%; overflow-wrap: anywhere; }
.tb .v.big { font-size: 34px; font-stretch: 125%; letter-spacing: -0.02em; }
.foot { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding: 18px 24px 40px; }

/* ---------- frame ruler + sheet index (outside the frame) ---------- */
.ruler {
  position: fixed; right: 0; top: 0; bottom: 0; width: 46px; z-index: 20; pointer-events: none;
  background:
    repeating-linear-gradient(to bottom, var(--line-2) 0 1px, transparent 1px 24px) right 0 top 0 / 10px 100% no-repeat,
    repeating-linear-gradient(to bottom, var(--faint) 0 1px, transparent 1px 120px) right 0 top 0 / 20px 100% no-repeat;
}
.ruler .mk { position: absolute; right: 24px; font: 10px var(--font-mono); color: var(--faint); transform: translateY(-50%); font-variant-numeric: tabular-nums; }
.ruler .ph { position: absolute; right: 0; width: 46px; height: 1px; background: var(--ravel); }
.ruler .ph span { position: absolute; right: 2px; bottom: 3px; font: 10px var(--font-mono); color: var(--ravel-soft); font-variant-numeric: tabular-nums; }
.index { position: fixed; right: 64px; bottom: 32px; z-index: 20; display: grid; justify-items: end; gap: 8px; list-style: none; margin: 0; padding: 0; }
.index a { text-decoration: none; font: 700 17px/1 var(--font-display); font-stretch: 125%; letter-spacing: 0.02em; text-transform: uppercase; color: var(--faint); transition: color .15s; }
.index a:hover, .index a[aria-current="true"] { color: var(--ink); }
@media (max-width: 1499px) { .index { display: none; } }
@media (max-width: 1279px) { .ruler { display: none; } }

@media (prefers-reduced-motion: reduce) {
  .wires .flow, .ticker-track { animation: none; }
  html { scroll-behavior: auto; }
}

/* ---------- pre-release ---------- */
.btn.soon { border-style: dashed; color: var(--muted); cursor: default; gap: 12px; }
.btn.soon small { font: inherit; font-size: 10px; color: var(--ravel-soft); }
.note { margin-top: 10px; color: var(--faint); }