/* =========================================================================
   Apple-quality dark theme — The Self-Improving PR Review Agent
   DevOpsDays Cairo 2026 · Final
   Design language: pure black, SF Pro, huge numbers, generous whitespace,
   subtle fade-up motion, one accent (Apple blue) + semantic green/red.
   ========================================================================= */

:root {
  --bg: #000000;
  --fg: #f5f5f7;
  --fg-dim: #a1a1a6;
  --fg-faint: #6e6e73;
  --accent: #0a84ff;          /* Apple dark-mode blue */
  --accent-soft: rgba(10, 132, 255, 0.16);
  --good: #30d158;            /* learning / correct */
  --bad: #ff453a;             /* overconfidence / wrong */
  --warn: #ffd60a;
  --hairline: rgba(255, 255, 255, 0.12);
  --card: rgba(255, 255, 255, 0.04);
  --card-border: rgba(255, 255, 255, 0.10);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
          "Segoe UI", system-ui, -apple-system-font, Roboto, Helvetica, Arial, sans-serif;
  --mono: "SF Mono", "SFMono-Regular", ui-monospace, "Cascadia Code", Consolas, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  /* The MergeFlow app's intro backdrop (IntroSequence): a violet-navy wash
     from the top right, plus the ambient light below. */
  background: #03060f radial-gradient(1200px 700px at 70% -10%, #1e1a5c 0%, #070b1f 55%, #03060f 100%) fixed;
  color: var(--fg);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow: hidden;
}

/* Ambient light (cyan low left, violet high right), same as the app intro. */
body::before {
  content: "";
  position: fixed;
  inset: -96px;
  pointer-events: none;
  opacity: 0.7;
  background: radial-gradient(600px 400px at 20% 80%, rgba(34, 211, 238, 0.18), transparent 60%), radial-gradient(700px 500px at 85% 20%, rgba(124, 107, 255, 0.28), transparent 60%);
}

/* ------------------------------------------------------------------ */
/*  Deck shell                                                          */
/* ------------------------------------------------------------------ */
.deck {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

.slide {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 7vh 9vw;
  opacity: 0;
  transform: translateY(24px) scale(0.995);
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  pointer-events: none;
  visibility: hidden;
}
.slide.is-active {
  opacity: 1;
  transform: none;
  pointer-events: auto;
  visibility: visible;
}

/* Fade-up children stagger on slide entry */
.slide .rise {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}
.slide.is-active .rise { opacity: 1; transform: none; }
.slide.is-active .rise:nth-child(1) { transition-delay: 0.05s; }
.slide.is-active .rise:nth-child(2) { transition-delay: 0.12s; }
.slide.is-active .rise:nth-child(3) { transition-delay: 0.19s; }
.slide.is-active .rise:nth-child(4) { transition-delay: 0.26s; }
.slide.is-active .rise:nth-child(5) { transition-delay: 0.33s; }
.slide.is-active .rise:nth-child(6) { transition-delay: 0.40s; }

/* ------------------------------------------------------------------ */
/*  Typography                                                          */
/* ------------------------------------------------------------------ */
.eyebrow {
  font-size: clamp(13px, 1.1vw, 17px);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 2.2vh;
}
h1.headline {
  font-size: clamp(40px, 6.2vw, 92px);
  line-height: 1.04;
  font-weight: 600;
  letter-spacing: -0.02em;
  text-align: center;
  max-width: 16ch;
}
h2.headline {
  font-size: clamp(34px, 4.6vw, 68px);
  line-height: 1.06;
  font-weight: 600;
  letter-spacing: -0.018em;
  text-align: center;
  max-width: 20ch;
}
.subhead {
  font-size: clamp(19px, 2.1vw, 30px);
  line-height: 1.35;
  font-weight: 400;
  color: var(--fg-dim);
  text-align: center;
  max-width: 30ch;
  margin-top: 3vh;
}
.lede {
  font-size: clamp(18px, 1.9vw, 27px);
  line-height: 1.4;
  font-weight: 400;
  color: var(--fg-dim);
  text-align: center;
  max-width: 40ch;
  margin-top: 3vh;
}
.footnote {
  position: absolute;
  bottom: 4vh;
  left: 0;
  right: 0;
  text-align: center;
  font-size: clamp(12px, 1vw, 15px);
  color: var(--fg-faint);
  letter-spacing: 0.02em;
}
.accent { color: var(--accent); }
.good { color: var(--good); }
.bad { color: var(--bad); }
.mono { font-family: var(--mono); }

/* ------------------------------------------------------------------ */
/*  Title slide                                                         */
/* ------------------------------------------------------------------ */
.slide--title .headline { font-size: clamp(44px, 7vw, 104px); }
.slide--title .brand {
  font-size: clamp(14px, 1.2vw, 18px);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-bottom: 4vh;
}
.slide--title .cred {
  margin-top: 5vh;
  font-size: clamp(13px, 1.1vw, 16px);
  color: var(--fg-faint);
  letter-spacing: 0.04em;
}
.slide--title .cred b { color: var(--fg-dim); font-weight: 600; }

/* ------------------------------------------------------------------ */
/*  Cold open (the catch)                                              */
/* ------------------------------------------------------------------ */
.slide--coldopen .kicker {
  font-size: clamp(13px, 1.1vw, 17px);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-bottom: 3vh;
}
.slide--coldopen .headline {
  font-size: clamp(44px, 6.4vw, 96px);
}
.pullquote {
  margin-top: 4.5vh;
  max-width: 26ch;
  text-align: center;
}
.pullquote .q {
  display: block;
  font-size: clamp(22px, 2.5vw, 38px);
  line-height: 1.32;
  font-weight: 500;
  color: var(--fg);
  letter-spacing: -0.01em;
}
.pullquote .src {
  display: block;
  margin-top: 2.2vh;
  font-size: clamp(12px, 1vw, 15px);
  letter-spacing: 0.04em;
  color: var(--fg-faint);
}
.slide--coldopen .turn {
  margin-top: 4.5vh;
  font-size: clamp(15px, 1.5vw, 22px);
  line-height: 1.5;
  color: var(--fg-dim);
  text-align: center;
  max-width: 46ch;
}
.slide--coldopen .turn b { color: var(--fg); font-weight: 600; }

/* ------------------------------------------------------------------ */
/*  Big DORA numbers                                                    */
/* ------------------------------------------------------------------ */
.metric-row {
  display: flex;
  gap: 6vw;
  align-items: flex-start;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 4vh;
}
.metric {
  text-align: center;
  min-width: 220px;
}
.metric .num {
  font-size: clamp(80px, 12vw, 190px);
  line-height: 0.9;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--fg);
}
.metric .num.up { color: var(--bad); }
.metric .num.down { color: var(--good); }
.metric .label {
  margin-top: 2.5vh;
  font-size: clamp(15px, 1.4vw, 22px);
  color: var(--fg-dim);
  font-weight: 500;
  letter-spacing: 0.01em;
}
.metric .sub {
  margin-top: 1vh;
  font-size: clamp(12px, 1vw, 15px);
  color: var(--fg-faint);
}

/* ------------------------------------------------------------------ */
/*  Human pilot distributions                                           */
/* ------------------------------------------------------------------ */
.pilot-dist {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2.2vw;
  margin: 4vh auto 0;
  width: 100%; /* else the grid shrinks to fit and the bar tracks collapse */
  max-width: 1500px;
}
.pilot-colhead {
  font-size: clamp(12px, 1vw, 16px);
  font-weight: 600;
  color: var(--fg-dim);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1.8vh;
}
.pilot-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1.2vh;
}
.pilot-barlabel {
  flex: 0 0 118px;
  font-size: clamp(11px, 0.95vw, 14px);
  color: var(--fg-faint);
  text-align: right;
}
.pilot-track {
  flex: 1;
  height: 10px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  overflow: hidden;
}
.pilot-fill {
  display: block;
  height: 100%;
  background: var(--good);
  border-radius: 6px;
}
.pilot-fill.warn { background: var(--bad); }
.pilot-val {
  flex: 0 0 48px;
  font-size: clamp(11px, 0.95vw, 14px);
  font-weight: 600;
  color: var(--fg);
  font-variant-numeric: tabular-nums;
}

/* ------------------------------------------------------------------ */
/*  Cards / lists                                                       */
/* ------------------------------------------------------------------ */
.card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 22px;
  padding: 3vh 3vw;
  backdrop-filter: blur(20px);
}
.point-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2.4vh;
  margin-top: 4vh;
  max-width: 900px;
}
.point-list li {
  display: flex;
  align-items: flex-start;
  gap: 1.2vw;
  font-size: clamp(17px, 1.7vw, 25px);
  line-height: 1.35;
  color: var(--fg);
  font-weight: 400;
}
.point-list li .dot {
  flex: none;
  width: 0.55em;
  height: 0.55em;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 0.5em;
}
.point-list li b { font-weight: 600; }
.point-list li .dim { color: var(--fg-dim); }

/* ------------------------------------------------------------------ */
/*  Tables (killer slides 7 & 8)                                       */
/* ------------------------------------------------------------------ */
table.compare {
  border-collapse: collapse;
  margin-top: 4vh;
  font-size: clamp(13px, 1.25vw, 19px);
  min-width: 82vw;
}
table.compare th, table.compare td {
  padding: 1.1vh 1.4vw;
  text-align: center;
  border-bottom: 1px solid var(--hairline);
}
table.compare thead th {
  color: var(--fg-dim);
  font-weight: 600;
  font-size: clamp(12px, 1.05vw, 16px);
  letter-spacing: 0.02em;
}
table.compare thead th.ours, table.compare td.ours {
  color: var(--accent);
  font-weight: 600;
}
table.compare thead th.ours { color: var(--accent); }
table.compare tbody th {
  text-align: left;
  font-weight: 500;
  color: var(--fg);
  white-space: nowrap;
}
table.compare tbody tr:last-child th,
table.compare tbody tr:last-child td { border-bottom: none; }
table.compare .yes { color: var(--good); font-weight: 700; }
table.compare .no { color: var(--fg-faint); }
table.compare .ours-col {
  background: var(--accent-soft);
  border-radius: 8px;
}
table.compare thead th.ours { background: var(--accent-soft); }

/* ------------------------------------------------------------------ */
/*  Loop diagram (slide 9)                                             */
/* ------------------------------------------------------------------ */
.loop {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.4vh;
  margin-top: 3vh;
}
.loop .node {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 1.6vh 2.4vw;
  font-size: clamp(14px, 1.3vw, 20px);
  font-weight: 500;
  text-align: center;
  min-width: 46vw;
}
.loop .node.reward {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--fg);
  box-shadow: 0 0 0 1px var(--accent), 0 0 40px rgba(10,132,255,0.25);
}
.loop .node.reward .tag {
  display: block;
  font-size: 0.72em;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-top: 0.4vh;
}
.loop .arrow {
  color: var(--fg-faint);
  font-size: clamp(18px, 1.6vw, 26px);
  line-height: 1;
}
.loop .branch {
  display: flex;
  gap: 3vw;
  align-items: stretch;
}
.loop .branch .node { min-width: 30vw; }

/* ------------------------------------------------------------------ */
/*  Proof charts (slide 6)                                             */
/* ------------------------------------------------------------------ */
.proof-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3vw;
  width: 100%;
  max-width: 1200px;
  margin-top: 3vh;
}
.proof-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 2.6vh 2.4vw;
}
.proof-card h3 {
  font-size: clamp(15px, 1.3vw, 20px);
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 1.6vh;
}
.proof-card .stat {
  font-size: clamp(30px, 3.4vw, 52px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--good);
  line-height: 1;
}
.proof-card .stat-label {
  font-size: clamp(12px, 1vw, 15px);
  color: var(--fg-dim);
  margin-top: 1vh;
}
.proof-card svg { width: 100%; height: auto; display: block; }
.proof-card .cap {
  font-size: clamp(11px, 0.95vw, 14px);
  color: var(--fg-faint);
  margin-top: 1.2vh;
  line-height: 1.4;
}
.dora-claim {
  margin-top: 3vh;
  font-size: clamp(17px, 1.7vw, 26px);
  font-weight: 500;
  text-align: center;
  color: var(--fg);
  max-width: 34ch;
  line-height: 1.35;
}
.dora-claim b { color: var(--accent); font-weight: 600; }

/* Proof split: mutations (left) + charts (right) */
.proof-split {
  width: 100%;
  max-width: 940px;
  margin-top: 3vh;
}
.proof-mutations {
  display: flex;
  flex-direction: column;
  gap: 2.2vh;
}
.mutation {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-left: 3px solid var(--good);
  border-radius: 14px;
  padding: 1.6vh 1.6vw;
}
.mut-feedback {
  font-size: clamp(13px, 1.1vw, 17px);
  font-weight: 500;
  color: var(--fg);
  line-height: 1.35;
}
.mut-arrow {
  font-size: clamp(11px, 0.9vw, 13px);
  color: var(--fg-faint);
  margin: 0.8vh 0;
  letter-spacing: 0.02em;
}
.mut-added {
  font-size: clamp(12px, 1vw, 15px);
  color: var(--good);
  line-height: 1.4;
  font-family: var(--mono, ui-monospace, SFMono-Regular, Menlo, monospace);
}
.proof-charts {
  display: flex;
  flex-direction: column;
  gap: 1.4vh;
}
.proof-stat {
  display: flex;
  align-items: baseline;
  gap: 1vw;
}
.proof-stat .num {
  font-size: clamp(28px, 3vw, 46px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--good);
  line-height: 1;
}
.proof-stat .lbl {
  font-size: clamp(12px, 1vw, 15px);
  color: var(--fg-dim);
}
.proof-charts svg { width: 100%; height: auto; display: block; }
.proof-charts .cap {
  font-size: clamp(11px, 0.95vw, 14px);
  color: var(--fg-faint);
  margin-top: 0.8vh;
  line-height: 1.4;
}
.sub {
  font-size: clamp(16px, 1.5vw, 24px);
  color: var(--fg-dim);
  max-width: 60ch;
  line-height: 1.4;
  margin-top: 1.6vh;
}

/* Proof at Scale: two benchmark panels (SWE-PRBench + Qodo hold-out) */
.bench-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.4vw;
  width: 100%;
  max-width: 1240px;
  margin-top: 3vh;
  align-items: start;
}
.bench-panel {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 2.4vh 1.8vw;
}
.bench-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1vw;
  min-height: 64px;
  margin-bottom: 1.4vh;
}
.bench-name {
  font-size: clamp(18px, 1.7vw, 26px);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.bench-tag {
  font-size: clamp(11px, 0.95vw, 14px);
  color: var(--fg-dim);
  letter-spacing: 0.02em;
  text-align: right;
}
.bench-tag.holdout { color: var(--warn); font-weight: 600; }
.bench-panel svg { width: 100%; height: auto; display: block; }
.bench-cap {
  font-size: clamp(12px, 1vw, 15px);
  color: var(--fg-dim);
  margin-top: 1.4vh;
  line-height: 1.4;
}
.bench-legend {
  display: flex;
  gap: 2.4vw;
  justify-content: center;
  margin-top: 2.2vh;
  font-size: clamp(12px, 1vw, 15px);
  color: var(--fg-dim);
}
.bench-legend .lg { display: inline-flex; align-items: center; gap: 0.6vw; }
.bench-legend .swatch { width: 14px; height: 14px; border-radius: 4px; display: inline-block; }
.bench-legend .swatch.base { background: var(--fg-faint); opacity: 0.5; }
.bench-legend .swatch.evo { background: var(--good); }
.scale-line {
  margin-top: 2vh;
  font-size: clamp(13px, 1.1vw, 17px);
  color: var(--fg-dim);
  text-align: center;
  letter-spacing: 0.02em;
}
.scale-line b { color: var(--accent); font-weight: 600; }

/* ------------------------------------------------------------------ */
/*  Responsible-AI table (slide 10)                                   */
/* ------------------------------------------------------------------ */
table.principle {
  border-collapse: collapse;
  margin-top: 3vh;
  font-size: clamp(14px, 1.3vw, 20px);
  min-width: 84vw;
}
table.principle th, table.principle td {
  padding: 1.4vh 1.6vw;
  text-align: left;
  border-bottom: 1px solid var(--hairline);
}
table.principle thead th {
  color: var(--fg-dim);
  font-weight: 600;
  font-size: clamp(12px, 1.05vw, 16px);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
table.principle tbody th { font-weight: 600; color: var(--fg); }
table.principle td .mono { color: var(--accent); font-size: 0.92em; }
table.principle tbody tr:last-child th,
table.principle tbody tr:last-child td { border-bottom: none; }

/* ------------------------------------------------------------------ */
/*  Numbers (slide 11)                                                 */
/* ------------------------------------------------------------------ */
.numbers-row {
  display: flex;
  gap: 5vw;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 4vh;
}
.number {
  text-align: center;
  min-width: 180px;
}
.number .big {
  font-size: clamp(56px, 7vw, 120px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 0.9;
  color: var(--fg);
}
.number .cap {
  margin-top: 2vh;
  font-size: clamp(14px, 1.2vw, 19px);
  color: var(--fg-dim);
  font-weight: 500;
}

/* ------------------------------------------------------------------ */
/*  Roadmap (slide 12)                                                 */
/* ------------------------------------------------------------------ */
.roadmap {
  display: flex;
  gap: 3vw;
  margin-top: 4vh;
  width: 100%;
  max-width: 1100px;
}
.roadmap .step {
  flex: 1;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 3vh 2.4vw;
}
.roadmap .step .k {
  font-size: clamp(12px, 1vw, 15px);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}
.roadmap .step .t {
  margin-top: 1.4vh;
  font-size: clamp(18px, 1.7vw, 26px);
  font-weight: 600;
  color: var(--fg);
}
.roadmap .step .d {
  margin-top: 1.4vh;
  font-size: clamp(13px, 1.1vw, 17px);
  color: var(--fg-dim);
  line-height: 1.4;
}

/* ------------------------------------------------------------------ */
/*  Close (slide 13)                                                   */
/* ------------------------------------------------------------------ */
.slide--close .headline { font-size: clamp(38px, 5.4vw, 84px); }
.slide--close .subhead { color: var(--fg); font-weight: 500; }

/* ------------------------------------------------------------------ */
/*  The Pain, Made Real (my PR)                                        */
/* ------------------------------------------------------------------ */
.pr-split {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 3vw;
  width: 100%;
  max-width: 1240px;
  margin-top: 2.6vh;
  align-items: start;
}
.pr-col { display: flex; flex-direction: column; gap: 1.8vh; }
.pr-code {
  font-family: var(--mono);
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 1.8vh 1.6vw;
  font-size: clamp(12px, 1.05vw, 17px);
  line-height: 1.6;
}
.pr-line { padding: 0.8vh 0; }
.pr-line + .pr-line { border-top: 1px solid var(--hairline); }
.pr-line .cm { color: var(--fg-faint); font-size: 0.82em; }
.pr-line.bad .pen { color: var(--bad); font-weight: 600; }
.pr-line.good .val { color: var(--good); font-weight: 600; }
.pr-note {
  font-size: clamp(14px, 1.25vw, 19px);
  line-height: 1.45;
  color: var(--fg-dim);
}
.pr-note b { color: var(--fg); font-weight: 600; }
.pr-fix {
  font-size: clamp(13px, 1.15vw, 18px);
  line-height: 1.45;
  color: var(--fg);
  background: var(--accent-soft);
  border: 1px solid var(--card-border);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
  padding: 1.4vh 1.4vw;
}
.pr-fix .tag {
  display: block;
  font-size: 0.72em;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 0.5vh;
}
.pr-fix b { font-weight: 600; }
.pr-receipt {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.2vh;
  overflow: hidden;
}
.pr-receipt img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
}
.pr-cap {
  margin-top: 1vh;
  font-size: clamp(11px, 0.95vw, 14px);
  color: var(--fg-faint);
  letter-spacing: 0.03em;
  text-align: center;
}
.pr-kicker {
  display: flex;
  align-items: baseline;
  gap: 1.2vw;
  padding: 0.4vh 0.4vw;
}
.pr-kicker .big {
  font-size: clamp(34px, 3.8vw, 60px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 0.9;
  color: var(--warn);
  white-space: nowrap;
}
.pr-kicker .cap {
  font-size: clamp(12px, 1.05vw, 16px);
  color: var(--fg-dim);
  line-height: 1.35;
}

/* ------------------------------------------------------------------ */
/*  The Agent + Where HGM Sits (diagram slide)                         */
/* ------------------------------------------------------------------ */
.slide--diagram { padding: 3.5vh 4vw; }
.slide--diagram h2.headline { font-size: clamp(28px, 3.6vw, 52px); max-width: 30ch; }
.diagram-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.6vw;
  width: 100%;
  max-width: 92vw;
  margin-top: 1.5vh;
  align-items: stretch;
}
.diagram {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 1vh 0.8vw 1.2vh;
  display: flex;
  flex-direction: column;
  gap: 1vh;
}
.diagram img {
  width: 100%;
  height: auto;
  max-width: 100%;
  max-height: none;
  display: block;
  margin: 0;
  border-radius: 10px;
  background: #000;
}
.diagram figcaption {
  font-size: clamp(12px, 1.05vw, 16px);
  color: var(--fg-dim);
  line-height: 1.4;
  text-align: center;
}
.diagram .d-tag {
  display: inline-block;
  font-size: 0.78em;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 700;
  padding: 0.15em 0.6em;
  border-radius: 999px;
  margin-right: 0.5em;
  vertical-align: middle;
}
.diagram .d-tag.static { color: var(--fg-dim); border: 1px solid var(--card-border); }
.diagram .d-tag.hgm { color: var(--accent); border: 1px solid var(--accent); background: var(--accent-soft); }

/* ------------------------------------------------------------------ */
/*  Chrome: progress + counter + nav hints                             */
/* ------------------------------------------------------------------ */
.progress {
  position: fixed;
  left: 0;
  bottom: 0;
  height: 3px;
  background: var(--accent);
  width: 0%;
  transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  z-index: 50;
}
.counter {
  position: fixed;
  right: 2.4vw;
  bottom: 2.2vh;
  font-size: 13px;
  color: var(--fg-faint);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  z-index: 50;
}
.nav-hint {
  position: fixed;
  left: 2.4vw;
  bottom: 2.2vh;
  font-size: 12px;
  color: var(--fg-faint);
  letter-spacing: 0.04em;
  z-index: 50;
  opacity: 0.7;
}
/* Click zones for touch/click nav */
.nav-zone {
  position: fixed;
  top: 0;
  bottom: 0;
  width: 18vw;
  z-index: 10;
  cursor: pointer;
}
.nav-zone.prev { left: 0; }
.nav-zone.next { right: 0; }

/* ------------------------------------------------------------------ */
/*  Technical-depth components (reward / selection / gate / mutation)  */
/* ------------------------------------------------------------------ */
.tech-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3vw;
  width: 100%;
  max-width: 1240px;
  margin-top: 2.4vh;
  align-items: start;
}
.tech-col { display: flex; flex-direction: column; gap: 1.6vh; }
.tech-col h3 {
  font-size: clamp(14px, 1.2vw, 19px);
  font-weight: 600;
  color: var(--fg);
  letter-spacing: 0.01em;
}
.tech-col h3 .tag {
  display: block;
  font-size: 0.72em;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-faint);
  font-weight: 600;
  margin-bottom: 0.6vh;
}
.formula {
  font-family: var(--mono);
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 1.5vh 1.6vw;
  font-size: clamp(12px, 1.05vw, 17px);
  line-height: 1.55;
  color: var(--fg);
  text-align: left;
  white-space: pre-wrap;
}
.formula .op { color: var(--accent); }
.formula .val { color: var(--good); }
.formula .pen { color: var(--bad); }
.formula .cm { color: var(--fg-faint); }
.formula .fn { color: var(--accent); }

.weight-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.9vw;
}
.weight-cell {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 1.1vh 0.8vw;
  text-align: center;
}
.weight-cell .k {
  font-size: clamp(10px, 0.85vw, 13px);
  color: var(--fg-dim);
  letter-spacing: 0.03em;
  line-height: 1.2;
}
.weight-cell .v {
  font-size: clamp(16px, 1.4vw, 24px);
  font-weight: 700;
  color: var(--fg);
  font-family: var(--mono);
  margin-top: 0.5vh;
}
.weight-cell.neg .v { color: var(--bad); }

.worked {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
  padding: 1.5vh 1.6vw;
}
.worked .w-title {
  font-size: clamp(11px, 0.9vw, 14px);
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1vh;
}
.worked .w-line {
  font-family: var(--mono);
  font-size: clamp(11px, 0.95vw, 15px);
  color: var(--fg);
  line-height: 1.55;
}
.worked .w-line .res { color: var(--good); font-weight: 700; }
.worked .w-line .lbl { color: var(--fg-dim); }

.tech-note {
  font-size: clamp(12px, 1vw, 16px);
  color: var(--fg-dim);
  line-height: 1.45;
}
.tech-note b { color: var(--fg); font-weight: 600; }

/* ------------------------------------------------------------------ */
/*  Pipeline (the whole story / superiority)                           */
/* ------------------------------------------------------------------ */
.pipeline {
  display: flex;
  align-items: stretch;
  gap: 0.8vw;
  margin-top: 3vh;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
  max-width: 1240px;
}
.pipe-stage {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 14px;
  padding: 1.6vh 1.2vw;
  text-align: center;
  flex: 1;
  min-width: 120px;
}
.pipe-stage .s-name { font-size: clamp(13px, 1.1vw, 18px); font-weight: 600; color: var(--fg); }
.pipe-stage .s-tool { font-size: clamp(10px, 0.85vw, 13px); color: var(--fg-faint); margin-top: 0.7vh; line-height: 1.3; }
.pipe-stage.us {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 0 1px var(--accent), 0 0 40px rgba(10,132,255,0.22);
}
.pipe-stage.us .s-name { color: var(--accent); }
.pipe-arrow { color: var(--fg-faint); font-size: clamp(16px, 1.4vw, 24px); align-self: center; }
.pipe-loop {
  margin-top: 2vh;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1vw;
  font-size: clamp(12px, 1vw, 16px);
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.pipe-loop .loop-arrow { font-size: clamp(18px, 1.6vw, 26px); }

.compound-row {
  display: flex;
  gap: 3vw;
  margin-top: 3vh;
  width: 100%;
  max-width: 1240px;
  justify-content: center;
}
.compound {
  flex: 1;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 2.2vh 1.8vw;
  text-align: center;
}
.compound .c-metric { font-size: clamp(13px, 1.1vw, 17px); color: var(--fg-dim); font-weight: 500; }
.compound .c-arrow { font-size: clamp(30px, 3vw, 48px); font-weight: 700; color: var(--good); line-height: 1; margin: 1vh 0; }
.compound .c-why { font-size: clamp(11px, 0.95vw, 15px); color: var(--fg-faint); line-height: 1.4; }

/* ------------------------------------------------------------------ */
/*  Architecture compare (stateless vs stateful)                       */
/* ------------------------------------------------------------------ */
.arch-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3vw;
  width: 100%;
  max-width: 1240px;
  margin-top: 2.4vh;
}
.arch-card {
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  padding: 2.4vh 2vw;
}
.arch-card.us { border-color: var(--accent); background: var(--accent-soft); }
.arch-card .a-head { font-size: clamp(15px, 1.3vw, 21px); font-weight: 600; color: var(--fg); }
.arch-card.us .a-head { color: var(--accent); }
.arch-card .a-sub { font-size: clamp(11px, 0.95vw, 15px); color: var(--fg-faint); margin-top: 0.6vh; }
.arch-card ul { list-style: none; margin-top: 1.8vh; display: flex; flex-direction: column; gap: 1.1vh; }
.arch-card li {
  font-size: clamp(12px, 1vw, 16px);
  color: var(--fg-dim);
  line-height: 1.4;
  display: flex;
  gap: 0.7vw;
  align-items: flex-start;
}
.arch-card li .mk { flex: none; font-weight: 700; }
.arch-card li .mk.no { color: var(--fg-faint); }
.arch-card li .mk.yes { color: var(--good); }
.arch-card.us li .mk.yes { color: var(--accent); }
.arch-card li b { color: var(--fg); font-weight: 600; }

/* ------------------------------------------------------------------ */
/*  Responsive fallbacks                                               */
/* ------------------------------------------------------------------ */
@media (max-width: 820px) {
  .tech-split { grid-template-columns: 1fr; }
  .arch-compare { grid-template-columns: 1fr; }
  .weight-grid { grid-template-columns: repeat(2, 1fr); }
  .pipeline { flex-direction: column; }
  .pipe-arrow { transform: rotate(90deg); }
  .compound-row { flex-direction: column; }
  .proof-grid { grid-template-columns: 1fr; }
  .proof-split { grid-template-columns: 1fr; }
  .bench-split { grid-template-columns: 1fr; }
  .roadmap { flex-direction: column; }
  .metric-row { gap: 3vw; }
  table.compare, table.principle { font-size: 12px; min-width: 92vw; }
}

/* ------------------------------------------------------------------ */
/*  The team                                                            */
/* ------------------------------------------------------------------ */
.team {
  display: flex;
  gap: 2vw;
  margin-top: 5vh;
  width: 100%;
  max-width: 1400px;
}
.team .member {
  flex: 1;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 22px;
  padding: 3.4vh 1vw 3vh;
}
.team .avatar {
  width: clamp(84px, 8.6vw, 148px);
  aspect-ratio: 1;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--card-border);
}
/* No photo yet: a monogram in the same circle, so the row stays even. */
.team .avatar--initials {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: clamp(26px, 2.6vw, 44px);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.team .name {
  display: block;
  margin-top: 2.4vh;
  font-size: clamp(16px, 1.4vw, 22px);
  font-weight: 600;
  color: var(--fg);
  white-space: nowrap;
}
.team .role {
  display: block;
  margin-top: 0.9vh;
  font-size: clamp(11px, 0.9vw, 14px);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}
@media (max-width: 820px) {
  .team { flex-wrap: wrap; gap: 3vw; }
  .team .member { flex: 1 1 40%; }
}

/* ------------------------------------------------------------------ */
/*  Intro (HyperFrames composition, played live)                        */
/* ------------------------------------------------------------------ */
.slide--intro { padding: 0; }
.intro-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  pointer-events: none;
  background: transparent; /* the intro lets the deck's backdrop through */
  color-scheme: normal;
}
.intro-hint {
  position: absolute;
  left: 0;
  right: 0;
  text-align: center;
  bottom: 2.6vh;
  font-size: clamp(11px, 0.85vw, 13px);
  letter-spacing: 0.08em;
  color: var(--fg-faint);
  opacity: 0;
  transition: opacity 0.6s ease 13s; /* only after the intro has played */
}
.slide--intro.is-active .intro-hint { opacity: 0.8; }

/* ------------------------------------------------------------------ */
/*  Live demo (MergeFlow in an iframe, driven by its guided tour)       */
/* ------------------------------------------------------------------ */
.slide--demo .demo-cover { text-align: center; max-width: 1100px; }
.slide--demo .demo-cover .lede { margin-left: auto; margin-right: auto; }
.demo-start {
  margin-top: 4.5vh;
  display: inline-flex;
  align-items: center;
  gap: 0.7em;
  padding: 1.1em 2.2em;
  border-radius: 999px;
  border: 0;
  background: var(--accent);
  color: #fff;
  font: 600 clamp(15px, 1.25vw, 20px) var(--font);
  cursor: pointer;
  box-shadow: 0 0 0 1px var(--accent), 0 16px 50px -12px rgba(10, 132, 255, 0.7);
}
.demo-start kbd {
  font: 600 0.8em var(--mono);
  padding: 0.15em 0.5em;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.2);
}
.demo-status { margin-top: 2.2vh; min-height: 1.5em; color: var(--warn); font-size: clamp(13px, 1vw, 16px); }
.demo-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  background: #000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease;
}
.slide--demo.is-live .demo-frame { opacity: 1; visibility: visible; }
.slide--demo.is-live .demo-cover { visibility: hidden; }
/* Always-reachable way back to the slides, above the app. */
.demo-exit {
  position: absolute;
  top: 1.4vh;
  left: 50%;
  transform: translateX(-50%); /* the app's header is empty mid-way; its corners hold the menus */
  z-index: 5;
  display: none;
  padding: 0.45em 0.9em;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  background: rgba(0, 0, 0, 0.55);
  color: var(--fg-dim);
  font: 500 12px var(--font);
  cursor: pointer;
  backdrop-filter: blur(10px);
}
.slide--demo.is-live .demo-exit { display: block; }
body.demo-live .nav-zone,
body.demo-live .nav-hint { display: none; }
body.demo-live .counter,
body.demo-live .progress { opacity: 0; }