/* Zero to Operator, call 1: Give your AI a brain. Versorix. */
@font-face {
  font-family: "Pirulen";
  src: url("fonts/Pirulen-Light.ttf") format("truetype");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Pirulen";
  src: url("fonts/Pirulen-Italic.ttf") format("truetype");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

:root {
  --black: #111110;
  --surface: #1b1a18;
  --surface-2: #262521;
  --line: #34332e;
  --ink: #ffffff;
  --paper: #f6f3ea;
  --muted: #aaa79c;
  --dim: #6f6d65;
  --volt: #ffe100;
  --volt-ink: #111110;
  --display: "Pirulen", "Inter", sans-serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: ui-monospace, "Cascadia Mono", "SF Mono", Consolas, monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  height: 100%;
  background: var(--black);
  color: var(--ink);
  font-family: var(--body);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}
button { font: inherit; }
svg { overflow: visible; }

/* ---------- Stage ---------- */
#viewport { position: fixed; inset: 0; overflow: hidden; touch-action: pan-y; }
#stage {
  position: absolute;
  left: 0;
  top: 0;
  width: 1920px;
  height: 1080px;
  transform-origin: 0 0;
  background: var(--black);
  overflow: hidden;
}
#grain {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  opacity: 0.04;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 1 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  mix-blend-mode: screen;
}

/* chrome */
#chrome { position: absolute; inset: 0; pointer-events: none; z-index: 40; }
#chrome .logo { position: absolute; left: 120px; top: 64px; height: 34px; width: auto; }
#chrome .counter {
  position: absolute;
  right: 120px;
  top: 62px;
  font-size: 20px;
  font-weight: 500;
  color: var(--dim);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}
#chrome .counter b { color: var(--muted); font-weight: 500; }
#progress {
  position: absolute;
  left: 0;
  bottom: 0;
  height: 6px;
  width: 0%;
  background: var(--volt);
  transition: width 0.5s var(--ease);
}

/* ---------- Slides ---------- */
.slide {
  position: absolute;
  inset: 0;
  padding: 150px 120px 120px;
  visibility: hidden;
  opacity: 0;
}
.slide.active { visibility: visible; opacity: 1; }
.slide .notes { display: none; }
[data-step] { opacity: 0; }

.kicker {
  font-family: var(--display);
  font-weight: 300;
  font-size: 20px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--volt);
  margin: 0 0 26px;
}
.h {
  font-size: 84px;
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.028em;
  margin: 0;
  color: var(--ink);
}
.h.sm { font-size: 66px; }
.sub {
  font-size: 32px;
  line-height: 1.4;
  color: var(--muted);
  margin: 30px 0 0;
  max-width: 24ch;
}
.sub b { color: var(--ink); font-weight: 600; }
.sub.ink { color: var(--ink); }

/* split layout: words left, picture right */
.split { display: grid; grid-template-columns: 760px 1fr; gap: 80px; align-items: center; height: 100%; }
.split .pic { position: relative; height: 100%; display: flex; align-items: center; justify-content: center; }

.foot {
  position: absolute;
  left: 120px;
  right: 120px;
  bottom: 110px;
}
.line {
  font-size: 34px;
  font-weight: 600;
  margin: 0;
  color: var(--ink);
}
.line i { font-style: normal; color: var(--volt); }

/* ---------- 01 Cover ---------- */
.cover { padding-top: 0; display: flex; flex-direction: column; justify-content: center; }
.cover .kicker { margin-bottom: 36px; }
.cover .display {
  font-family: var(--display);
  font-weight: 300;
  text-transform: uppercase;
  font-size: 122px;
  line-height: 1.04;
  letter-spacing: 0.02em;
  margin: 0;
}
.cover .display .brain-word { position: relative; display: inline-block; }
.cover .display .brain-word .ul {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -8px;
  height: 14px;
  background: var(--volt);
  transform: scaleX(0);
  transform-origin: left center;
}
.cover .tag { font-size: 34px; color: var(--muted); margin: 40px 0 0; }
.cover .brainpic { position: absolute; right: 150px; top: 230px; width: 560px; height: 560px; }
.cover .brainpic path { fill: none; stroke: var(--ink); stroke-width: 7; stroke-linecap: round; stroke-linejoin: round; }
.cover .brainpic .fill { fill: var(--volt); stroke: none; opacity: 0; }
.cover-foot {
  position: absolute;
  left: 120px;
  right: 120px;
  bottom: 100px;
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 22px;
  color: var(--muted);
}
.cover-foot img { height: 30px; }
.cover-foot i { width: 1px; height: 26px; background: var(--line); }

/* ---------- 02 The five Mondays + open this now ---------- */
.plan { display: grid; grid-template-columns: 1fr 440px; gap: 90px; align-items: start; }
.plan .h { max-width: 15ch; }
.rail { position: relative; margin-top: 64px; }
.rail .track { position: absolute; left: 26px; top: 43px; bottom: 43px; width: 4px; background: var(--line); }
.rail .fill { display: none; }
.rail .stop { position: relative; display: grid; grid-template-columns: 56px 150px 1fr; align-items: center; gap: 28px; height: 86px; }
.rail .dot { width: 56px; height: 56px; border-radius: 50%; border: 4px solid var(--line); background: var(--black); display: grid; place-items: center; font-weight: 800; font-size: 22px; color: var(--muted); }
.rail .stop.today .dot { background: var(--volt); border-color: var(--volt); color: var(--volt-ink); }
.rail .date { font-size: 24px; color: var(--muted); font-weight: 500; }
.rail .name { font-size: 40px; font-weight: 700; letter-spacing: -0.01em; }
.rail .stop.today .name { color: var(--volt); }
.rail .stop.today .name small { font-size: 20px; font-weight: 600; color: var(--muted); margin-left: 18px; letter-spacing: 0; }

.qrcard {
  background: var(--paper);
  color: var(--volt-ink);
  border-radius: 28px;
  padding: 34px 34px 30px;
  text-align: center;
  margin-top: 18px;
}
.qrcard .qr { width: 300px; height: 300px; margin: 0 auto; display: block; background: #fff; padding: 14px; border-radius: 14px; }
.qrcard .qr svg { width: 100%; height: 100%; display: block; }
.qrcard h3 { margin: 24px 0 8px; font-size: 36px; font-weight: 800; letter-spacing: -0.02em; }
.qrcard .url { display: block; font-family: var(--mono); font-size: 22px; color: #3b3a35; text-decoration: none; pointer-events: auto; word-break: break-all; }
.qrcard p { margin: 16px 0 0; font-size: 20px; color: #5a584f; line-height: 1.35; }

/* ---------- 03 Day one, every day ---------- */
.dayone .h { max-width: 12ch; }
.calwrap { position: relative; width: 760px; height: 640px; perspective: 1800px; }
.cal { position: absolute; left: 80px; top: 70px; width: 600px; height: 540px; }
.cal .base {
  position: absolute;
  inset: 0;
  background: var(--paper);
  border-radius: 24px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
}
.cal .page {
  position: absolute;
  inset: 0;
  background: var(--paper);
  border-radius: 24px;
  transform-origin: 50% 0;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  overflow: hidden;
  color: var(--volt-ink);
}
.cal .page .band { height: 110px; background: var(--volt-ink); color: var(--volt); display: flex; align-items: center; justify-content: center; font-family: var(--display); font-size: 34px; letter-spacing: 0.12em; }
.cal .page .big { position: absolute; left: 0; right: 0; top: 190px; text-align: center; font-family: var(--display); font-size: 150px; line-height: 1; letter-spacing: 0.04em; }
.cal .page .small { position: absolute; left: 0; right: 0; top: 134px; text-align: center; font-size: 24px; font-weight: 600; color: #8a887e; }
.cal .rings { position: absolute; left: 0; right: 0; top: -34px; display: flex; justify-content: center; gap: 220px; z-index: 5; }
.cal .rings i { width: 26px; height: 70px; border: 8px solid var(--ink); border-radius: 14px; background: var(--black); }
.badge {
  position: absolute;
  right: -40px;
  bottom: 20px;
  width: 320px;
  background: #fff;
  color: var(--volt-ink);
  border-radius: 18px;
  transform: rotate(-7deg);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  z-index: 6;
}
.badge .top { background: #e0252b; color: #fff; text-align: center; padding: 14px 10px 10px; font-weight: 800; font-size: 26px; letter-spacing: 0.02em; }
.badge .top small { display: block; font-size: 14px; font-weight: 600; opacity: 0.9; letter-spacing: 0.08em; }
.badge .name { padding: 24px 10px 30px; text-align: center; font-size: 56px; font-weight: 800; letter-spacing: -0.02em; }

/* ---------- 04 The notebook ---------- */
.notebook .h { max-width: 12ch; }
.nbwrap { position: relative; width: 820px; height: 620px; perspective: 2200px; }
.nb { position: absolute; left: 330px; top: 40px; width: 420px; height: 540px; transform-style: preserve-3d; }
.nb .inner {
  position: absolute;
  inset: 0;
  background: var(--paper);
  border-radius: 6px 22px 22px 6px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
  padding: 60px 44px 40px 60px;
  color: var(--volt-ink);
  background-image: repeating-linear-gradient(to bottom, transparent 0 46px, #d9d4c6 46px 48px);
  background-position: 0 70px;
}
.nb .inner p { margin: 0; font-size: 30px; font-weight: 600; line-height: 48px; color: #2c2b27; opacity: 0; }
.nb .inner .margin { position: absolute; left: 48px; top: 0; bottom: 0; width: 2px; background: #e08c8c; opacity: 0.6; }
.nb .cover {
  position: absolute;
  inset: 0;
  transform-origin: 0 50%;
  transform-style: preserve-3d;
}
.nb .cover .front {
  position: absolute;
  inset: 0;
  background: var(--volt);
  border-radius: 6px 22px 22px 6px;
  backface-visibility: hidden;
  display: flex;
  align-items: flex-end;
  padding: 40px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
}
.nb .cover .back { position: absolute; inset: 0; background: #d4bb00; border-radius: 22px 6px 6px 22px; transform: rotateY(180deg); backface-visibility: hidden; }
.nb .cover .lbl { background: var(--volt-ink); color: var(--volt); font-family: var(--display); font-size: 24px; letter-spacing: 0.1em; padding: 16px 20px; border-radius: 6px; width: 100%; text-align: center; }
.nb .spine { position: absolute; left: -16px; top: 30px; bottom: 30px; width: 24px; display: flex; flex-direction: column; justify-content: space-between; z-index: 3; transform: translateZ(2px); }
.nb .spine i { height: 22px; border: 6px solid var(--ink); border-radius: 12px; background: var(--black); }
.folderhint {
  position: absolute;
  left: 290px;
  bottom: -60px;
  display: flex;
  align-items: center;
  white-space: nowrap;
  gap: 22px;
  font-size: 30px;
  color: var(--muted);
}
.folderhint svg { width: 64px; height: 52px; }
.folderhint svg path { fill: none; stroke: var(--volt); stroke-width: 6; stroke-linejoin: round; }
.folderhint code { font-family: var(--mono); color: var(--ink); background: var(--surface-2); padding: 6px 14px; border-radius: 8px; font-size: 28px; }

/* ---------- 05 Four parts ---------- */
.parts { padding-top: 130px; }
.parts .h { max-width: 14ch; }
.parts-wrap { display: grid; grid-template-columns: 420px 1fr; gap: 60px; align-items: center; margin-top: 50px; height: 440px; }
.bigfolder { position: relative; width: 420px; height: 340px; }
.bigfolder svg { width: 100%; height: 100%; }
.bigfolder .body { fill: var(--volt); }
.bigfolder .back { fill: #c9b200; }
.bigfolder .lbl { font-family: var(--mono); font-size: 30px; fill: var(--volt-ink); font-weight: 600; }
.items { display: grid; grid-template-columns: 1fr 1fr; gap: 34px 50px; }
.item { display: grid; grid-template-columns: 120px 1fr; gap: 26px; align-items: center; }
.item .ico { width: 120px; height: 120px; }
.item .ico svg { width: 100%; height: 100%; }
.item .ico path, .item .ico rect, .item .ico line, .item .ico circle { fill: none; stroke: var(--ink); stroke-width: 6; stroke-linecap: round; stroke-linejoin: round; }
.item .ico .v { fill: var(--volt); stroke: none; }
.item .ico .vs { stroke: var(--volt); }
.item h3 { margin: 0; font-size: 42px; font-weight: 800; letter-spacing: -0.02em; line-height: 1.05; }
.item p { margin: 8px 0 0; font-size: 24px; color: var(--muted); line-height: 1.3; }
.item code { font-family: var(--mono); font-size: 18px; color: var(--dim); display: block; margin-top: 8px; }
.inbox-note { position: absolute; left: 120px; bottom: 104px; display: flex; align-items: center; gap: 18px; font-size: 24px; color: var(--muted); }
.inbox-note svg { width: 48px; height: 40px; }
.inbox-note svg path { fill: none; stroke: var(--muted); stroke-width: 5; stroke-linejoin: round; stroke-linecap: round; }
.inbox-note b { color: var(--ink); font-weight: 700; }
.inbox-note code { font-family: var(--mono); color: var(--dim); font-size: 20px; }

/* ---------- 06 The bank app ---------- */
.bank .h { font-size: 72px; }
.bank .split { grid-template-columns: 820px 1fr; }
.map { margin-top: 50px; display: grid; gap: 22px; }
.map .row { display: grid; grid-template-columns: 220px 60px 1fr; align-items: center; font-size: 34px; font-weight: 700; }
.map .row .eq { color: var(--dim); font-weight: 400; text-align: center; }
.map .row .k { color: var(--volt); }
.map .row .v small { display: block; font-size: 22px; font-weight: 500; color: var(--muted); margin-top: 2px; }
.bank .rule { margin-top: 46px; font-size: 30px; line-height: 1.35; color: var(--ink); max-width: 24ch; }
.bank .rule i { font-style: normal; color: var(--volt); }
.phone {
  width: 440px;
  height: 800px;
  background: #fff;
  color: var(--volt-ink);
  border-radius: 54px;
  border: 10px solid #2a2925;
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  position: relative;
}
.phone .notch { position: absolute; left: 50%; top: 14px; transform: translateX(-50%); width: 130px; height: 32px; background: #2a2925; border-radius: 20px; }
.phone .bal { padding: 74px 34px 24px; background: var(--volt-ink); color: #fff; position: relative; }
.phone .bal .k { font-size: 16px; color: #9b998f; font-weight: 600; letter-spacing: 0.02em; }
.phone .bal .n { font-size: 56px; font-weight: 800; letter-spacing: -0.03em; margin-top: 4px; font-variant-numeric: tabular-nums; }
.phone .tag { position: absolute; right: 26px; top: 76px; background: var(--volt); color: var(--volt-ink); font-weight: 800; font-size: 15px; padding: 6px 12px; border-radius: 999px; }
.phone .list { padding: 18px 26px 0; }
.phone .list .k { font-size: 15px; color: #7b796f; font-weight: 600; letter-spacing: 0.02em; display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.phone .list .k .tag2 { background: var(--volt); color: var(--volt-ink); font-weight: 800; font-size: 14px; padding: 5px 11px; border-radius: 999px; }
.phone .tx { display: flex; justify-content: space-between; align-items: center; padding: 15px 4px; border-bottom: 1px solid #ece9e0; font-size: 19px; font-weight: 600; opacity: 0; }
.phone .tx small { display: block; font-size: 13px; color: #8a887e; font-weight: 500; margin-top: 2px; }
.phone .tx .amt { font-variant-numeric: tabular-nums; }
.phone .tx .amt.in { color: #1f8a46; }

/* ---------- 07 The chart ---------- */
.why .h { font-size: 66px; max-width: 20ch; }
.chart { width: 920px; height: 582px; }
.chart .axis { stroke: var(--line); stroke-width: 2; }
.chart .grid { stroke: var(--line); stroke-width: 1; stroke-dasharray: 2 8; }
.chart .lbl { fill: var(--muted); font-size: 22px; font-family: var(--body); font-weight: 500; }
.chart .flat { fill: none; stroke: var(--muted); stroke-width: 4; stroke-linejoin: round; }
.chart .grow { fill: none; stroke: var(--volt); stroke-width: 8; stroke-linecap: round; }
.chart .end { font-size: 28px; font-weight: 800; font-family: var(--body); }
.chart .end.g { fill: var(--volt); }
.chart .end.f { fill: var(--muted); }

/* ---------- 08 Just files ---------- */
.files .h { max-width: 14ch; }
.hub { position: relative; width: 940px; height: 640px; }
.hub svg.wires { position: absolute; inset: 0; width: 100%; height: 100%; }
.hub svg.wires path { fill: none; stroke: var(--volt); stroke-width: 6; stroke-linecap: round; }
.hub .folder {
  position: absolute;
  left: 20px;
  top: 150px;
  width: 420px;
  background: var(--paper);
  color: var(--volt-ink);
  border-radius: 20px;
  padding: 26px 30px;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5);
}
.hub .folder .tab { font-family: var(--mono); font-size: 20px; color: #6b695f; margin-bottom: 14px; }
.hub .folder ul { list-style: none; margin: 0; padding: 0; font-family: var(--mono); font-size: 24px; line-height: 1.75; }
.hub .folder li { display: flex; justify-content: space-between; gap: 20px; }
.hub .folder li span { font-family: var(--body); font-size: 17px; color: #8a887e; font-weight: 500; white-space: nowrap; }
.hub .folder li.hi { color: var(--volt-ink); font-weight: 700; background: var(--volt); margin: 0 -12px; padding: 0 12px; border-radius: 8px; }
.hub .tool {
  position: absolute;
  left: 640px;
  width: 300px;
  height: 110px;
  border: 4px solid var(--ink);
  border-radius: 18px;
  display: flex;
  align-items: center;
  padding: 0 28px;
  font-size: 30px;
  font-weight: 700;
  background: var(--black);
}
.hub .tool.dashed { border-style: dashed; color: var(--muted); border-color: var(--dim); }
.hub .tool .dot { width: 14px; height: 14px; border-radius: 50%; background: var(--volt); margin-right: 18px; flex: none; }
.hub .tool.dashed .dot { background: var(--dim); }

/* ---------- 09 Your scoreboard ---------- */
.yours { padding-top: 130px; }
.boards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-top: 56px; }
.board {
  background: var(--volt-ink);
  border: 4px solid var(--volt);
  border-radius: 22px;
  padding: 30px 30px 34px;
  min-height: 400px;
}
.board h3 { margin: 0; font-family: var(--display); font-weight: 300; font-size: 26px; letter-spacing: 0.1em; color: var(--volt); text-transform: uppercase; }
.board .who { margin: 8px 0 30px; font-size: 20px; color: var(--muted); }
.board .r { display: flex; justify-content: space-between; align-items: baseline; font-size: 30px; font-weight: 700; padding: 18px 0; border-top: 2px solid var(--line); }
.board .r:last-child { border-bottom: 2px solid var(--line); }
.board .r i { font-style: normal; color: var(--volt); font-size: 22px; font-weight: 500; white-space: nowrap; }
.yours .foot .line { color: var(--muted); font-weight: 500; }

/* ---------- 10 Let's build it ---------- */
.build .split { grid-template-columns: 1fr 460px; gap: 100px; }
.steps { list-style: none; margin: 56px 0 0; padding: 0; display: grid; gap: 22px; }
.steps li { display: grid; grid-template-columns: 90px 1fr; align-items: center; gap: 30px; }
.steps .n { width: 90px; height: 90px; border-radius: 50%; background: var(--volt); color: var(--volt-ink); display: grid; place-items: center; font-weight: 800; font-size: 40px; }
.steps h3 { margin: 0; font-size: 44px; font-weight: 800; letter-spacing: -0.02em; }
.steps p { margin: 6px 0 0; font-size: 24px; color: var(--muted); }
.steps code { font-family: var(--mono); color: var(--ink); background: var(--surface-2); padding: 3px 10px; border-radius: 6px; }
.build .qrcard { margin-top: 0; }
.build .foot { bottom: 104px; }
.notice {
  margin-top: 60px;
  border-left: 10px solid var(--volt);
  padding: 10px 0 10px 34px;
  font-size: 36px;
  line-height: 1.3;
  font-weight: 600;
  max-width: 28ch;
}
.notice i { font-style: normal; color: var(--volt); }
.build .h { font-size: 66px; }
.build .stuck { margin: 26px 0 0; font-size: 22px; line-height: 1.4; color: var(--muted); text-align: center; }
.build .stuck b { color: var(--ink); }

/* ---------- 11 Tomorrow morning ---------- */
.tomorrow .split { grid-template-columns: 1fr 640px; gap: 90px; }
.bubbles { margin-top: 48px; display: grid; gap: 22px; max-width: 760px; }
.bubble {
  justify-self: end;
  background: var(--volt);
  color: var(--volt-ink);
  border-radius: 28px 28px 6px 28px;
  padding: 22px 32px;
  font-size: 32px;
  font-weight: 600;
  line-height: 1.25;
  max-width: 680px;
  opacity: 0;
}
.bubble .cur { display: inline-block; width: 3px; height: 1em; background: var(--volt-ink); vertical-align: -0.15em; margin-left: 4px; }
.ship { background: var(--surface); border: 2px solid var(--line); border-radius: 26px; padding: 40px 44px; }
.ship h3 { margin: 0 0 18px; font-family: var(--display); font-weight: 300; font-size: 22px; letter-spacing: 0.1em; color: var(--volt); }
.ship p { margin: 0; font-size: 32px; font-weight: 600; line-height: 1.3; }
.ship p span { color: var(--muted); font-weight: 500; }
.nextcall { margin-top: 36px; font-size: 30px; color: var(--muted); }
.nextcall b { color: var(--ink); font-weight: 800; font-size: 40px; display: block; letter-spacing: -0.02em; margin-top: 4px; }

/* ---------- Notes, help, presenter ---------- */
#notes {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  max-height: 40vh;
  overflow: auto;
  background: rgba(17, 17, 16, 0.95);
  border-top: 2px solid var(--volt);
  padding: 20px 28px 28px;
  font-size: 18px;
  line-height: 1.5;
  color: var(--ink);
  z-index: 100;
  transform: translateY(100%);
  transition: transform 0.35s var(--ease);
}
#notes.open { transform: translateY(0); }
#notes h4 { margin: 0 0 10px; font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--volt); font-weight: 600; }
#notes p { margin: 0 0 10px; max-width: 75ch; }
#notes b { color: var(--volt); font-weight: 700; }
#notes code { font-family: var(--mono); color: var(--muted); }
#help {
  position: fixed;
  right: 16px;
  bottom: 14px;
  font-size: 12px;
  color: var(--dim);
  z-index: 90;
  letter-spacing: 0.02em;
  user-select: none;
}
#help kbd { color: var(--muted); font-family: var(--mono); }

body.presenter #viewport, body.presenter #help { display: none; }
#pres { display: none; }
body.presenter #pres { display: block; padding: 32px 40px; min-height: 100vh; overflow: auto; }
#pres .ph { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 2px solid var(--volt); padding-bottom: 12px; margin-bottom: 20px; }
#pres .ph b { font-family: var(--display); font-weight: 300; font-size: 24px; letter-spacing: 0.06em; }
#pres .ph span { color: var(--muted); font-size: 18px; }
#pres .pn { font-size: 24px; line-height: 1.55; max-width: 80ch; }
#pres .pn p { margin: 0 0 16px; }
#pres .pn b { color: var(--volt); }
#pres .pn code { font-family: var(--mono); color: var(--muted); }
#pres .hint { color: var(--dim); font-size: 14px; margin-top: 30px; }

.copy-btn {
  background: var(--volt-ink);
  color: #fff;
  border: 0;
  padding: 12px 22px;
  font-size: 18px;
  font-weight: 700;
  border-radius: 10px;
  cursor: pointer;
  pointer-events: auto;
  margin-top: 18px;
}
.copy-btn.done { background: #1f8a46; }
.copy-btn:focus-visible { outline: 3px solid var(--volt); outline-offset: 3px; }
a:focus-visible { outline: 3px solid var(--volt); outline-offset: 3px; }

@media (prefers-reduced-motion: reduce) {
  #progress, #notes { transition: none; }
}
@media (max-width: 700px) {
  #help { display: none; }
  #notes { font-size: 15px; max-height: 50vh; }
}