/* ==========================================================================
   North Link Building — investor deck design system
   Paper-technical light mode · editorial-tech detailing · institutional calm
   ========================================================================== */

:root {
  /* Surfaces */
  --shell: #0f1e30;               /* dark outer frame */
  --paper: #faf7f1;               /* warm off-white interior */
  --paper-deep: #f2eee5;          /* layered paper tone */
  --card: #fffdf9;                /* raised card surface */

  /* Ink */
  --ink: #2a2d33;                 /* charcoal body */
  --ink-soft: #62666d;            /* secondary text */
  --ink-faint: #8b8f96;

  /* Brand */
  --navy: #14304e;                /* primary */
  --navy-deep: #0e2239;
  --green: #1e7a54;               /* positive financial figures */
  --green-tint: #e6f1ea;
  --accent: #a6512e;              /* restrained rust accent */
  --accent-tint: #f6ebe4;
  --navy-tint: #e7edf3;

  /* Lines (container-lines skill) */
  --line: rgba(26, 32, 44, 0.12);
  --line-strong: rgba(26, 32, 44, 0.26);
  --corner-size: 5px;

  /* Type */
  --sans: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;

  /* Shadows (beautiful-shadows, translated to plain CSS) */
  --shadow-sm: 0px 2px 3px -1px rgba(0,0,0,0.1), 0px 1px 0px 0px rgba(25,28,33,0.02), 0px 0px 0px 1px rgba(25,28,33,0.08);
  --shadow-md: 0px 0px 0px 1px rgba(0,0,0,0.06), 0px 1px 1px -0.5px rgba(0,0,0,0.06), 0px 3px 3px -1.5px rgba(0,0,0,0.06), 0px 6px 6px -3px rgba(0,0,0,0.06), 0px 12px 12px -6px rgba(0,0,0,0.06), 0px 24px 24px -12px rgba(0,0,0,0.06);
  --shadow-lg: 0 2.8px 2.2px rgba(0,0,0,0.034), 0 6.7px 5.3px rgba(0,0,0,0.048), 0 12.5px 10px rgba(0,0,0,0.06), 0 22.3px 17.9px rgba(0,0,0,0.072), 0 41.8px 33.4px rgba(0,0,0,0.086), 0 100px 80px rgba(0,0,0,0.12);

  /* Motion */
  --ease: cubic-bezier(0.33, 1, 0.68, 1);
  --dur: 260ms;

  --frame: 14px;                  /* dark shell reveal around the paper */
  --content-max: 77.5rem;   /* scales with the root type size */
  --content-pad: clamp(28px, 4.5vw, 72px);
}

/* ---------- Reset ---------- */

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

html { -webkit-text-size-adjust: 100%; font-size: 16px; }

/* Resolution-adaptive type scale: every font size in the deck is rem-based,
   so the root size below scales the whole type system with the viewport.
   Calibrated to 16px at ~1600×1000; ~+10% at 1920×1080, ~+33% at 2560×1440,
   ~−11% at 1366×768. Mobile scroll mode keeps the fixed 16px base above. */
@media (min-width: 821px) {
  html { font-size: clamp(12.5px, 0.42vw + 0.3vh + 6.28px, 22px); }
}

body {
  font-family: var(--sans);
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--ink);
  background: var(--shell);
  overflow: hidden;
}

img { max-width: 100%; display: block; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
h1, h2, h3 { text-wrap: balance; }
p { text-wrap: pretty; }

.num { font-variant-numeric: tabular-nums; letter-spacing: -0.01em; }
.green { color: var(--green); }

/* ---------- Deck shell ---------- */

.deck {
  position: fixed;
  inset: var(--frame);
  background:
    repeating-linear-gradient(135deg, rgba(20, 48, 78, 0.022) 0 1px, transparent 1px 10px),
    var(--paper);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

/* ---------- Slides ---------- */

.slide {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateX(28px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  pointer-events: none;
  visibility: hidden;
  overflow: hidden;
}
.slide.before { transform: translateX(-28px); }
.slide.active {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
  visibility: visible;
}

/* Meta rail (mono utility, number-details) */
.slide-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 18px var(--content-pad) 14px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  flex: none;
}
.meta-num { color: var(--accent); font-weight: 600; }
.meta-right { margin-left: auto; text-align: right; letter-spacing: 0.08em; }

/* Content container with vertical guide lines + corner squares */
.slide-inner {
  position: relative;
  isolation: isolate;
  width: min(100% - (var(--content-pad) * 0.6), var(--content-max));
  margin-inline: auto;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: clamp(24px, 4vh, 56px) clamp(24px, 3vw, 56px) clamp(64px, 8vh, 88px);
  display: flex;
  flex-direction: column;
  justify-content: safe center;
}
.slide-inner.split, .slide-inner.cover-grid { align-content: safe center; }
.slide-inner::before,
.slide-inner::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--line);
  pointer-events: none;
  z-index: -1;
}
.slide-inner::before { left: 0; }
.slide-inner::after { right: 0; }

/* ---------- Typography ---------- */

.kicker {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 22px;
}

h1.cover-title {
  font-size: clamp(2.75rem, 6.5vw, 5.75rem);
  line-height: 1.02;
  letter-spacing: -0.025em;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 20px;
}

h2 {
  font-size: clamp(1.625rem, 3vw, 2.625rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 650;
  color: var(--navy);
  margin-bottom: clamp(20px, 3.5vh, 36px);
}

h3 { font-size: 1.0625rem; font-weight: 650; color: var(--navy); }

.cover-sub { font-size: clamp(1.125rem, 1.6vw, 1.4375rem); color: var(--ink-soft); max-width: 34ch; }

.mono-note {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 28px;
}

.hero-number {
  font-size: clamp(3.25rem, 6.5vw, 6.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--navy);
  font-variant-numeric: tabular-nums;
  margin: 6px 0 8px;
}
.hero-number.green { color: var(--green); }
.hero-unit { font-size: 0.36em; font-weight: 500; color: var(--ink-soft); letter-spacing: 0; }
.hero-number-secondary {
  font-size: clamp(2.125rem, 3.6vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--navy);
  margin-top: 26px;
  line-height: 1;
}
.hero-caption { color: var(--ink-soft); font-size: 0.9375rem; max-width: 44ch; }
.hero-caption em { font-style: normal; border-bottom: 2px solid var(--accent); }

.support-line {
  margin-top: clamp(20px, 3.5vh, 36px);
  font-size: clamp(1rem, 1.4vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 62ch;
}

.body-note { margin-top: 22px; color: var(--ink-soft); font-size: 0.9375rem; max-width: 68ch; }
.emphasis-line {
  margin-top: 22px;
  font-size: clamp(1.0625rem, 1.5vw, 1.3125rem);
  font-weight: 650;
  color: var(--navy);
  border-top: 1px solid var(--line-strong);
  padding-top: 16px;
}

/* ---------- Icons ---------- */

.icon {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex: none;
}

/* ---------- Cover ---------- */

.cover-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(28px, 4vw, 64px);
  align-items: center;
}

/* ---------- Figures / image placeholders ---------- */

.figure {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background: var(--card);
}
.figure img { width: 100%; height: 100%; object-fit: cover; }
.figure-hero { aspect-ratio: 4 / 3; }
.figure-sm { aspect-ratio: 16 / 6; margin-top: 22px; }
.figure .ph-label { display: none; }
.figure.ph {
  background:
    repeating-linear-gradient(135deg, rgba(20, 48, 78, 0.05) 0 2px, transparent 2px 14px),
    linear-gradient(160deg, var(--navy-tint), var(--paper-deep));
  border: 1px solid var(--line);
  box-shadow: none;
  display: flex;
  align-items: center;
  justify-content: center;
}
.figure.ph .ph-label {
  display: block;
  text-align: center;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--navy);
}
.figure.ph .ph-label span {
  display: block;
  margin-top: 6px;
  color: var(--ink-faint);
  text-transform: none;
  letter-spacing: 0.03em;
}
.ph-text {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}

/* ---------- Metric cards ---------- */

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(14px, 1.6vw, 22px);
}
.metric-grid-narrow { grid-template-columns: repeat(3, 1fr); }
.metric-card {
  background: var(--card);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: clamp(18px, 2.2vh, 28px) clamp(18px, 1.8vw, 26px);
}
.metric-label {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 10px;
}
.metric-value {
  font-size: clamp(1.625rem, 2.6vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--navy);
  font-variant-numeric: tabular-nums;
  line-height: 1.05;
}
.metric-unit { font-size: 0.5em; font-weight: 500; color: var(--ink-soft); }
.metric-ph .ph-text { margin-top: 6px; display: block; }

/* ---------- Editorial feature list (slide 3) ---------- */

.feature-list { list-style: none; }
.feature-list li {
  display: grid;
  grid-template-columns: 44px 172px 1fr;
  align-items: baseline;
  gap: 14px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}
.feature-list li:first-child { border-top: 1px solid var(--line-strong); }
.feature-list h3 { font-size: 1.0312rem; }
.feature-list p { font-size: 0.9062rem; color: var(--ink-soft); }
.feat-num {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--accent);
}
.figure-tall { aspect-ratio: 4 / 3.4; }
.figure-credit {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 0.6562rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.tag-row {
  margin-top: clamp(18px, 3vh, 30px);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.tag-row-label {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-right: 6px;
}
.tag {
  font-size: 0.7812rem;
  color: var(--ink-soft);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 4px 12px;
  background: var(--paper);
}

/* ---------- Split layouts ---------- */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(28px, 4vw, 72px);
  align-items: center;
}
.split-left, .split-right { min-width: 0; }

/* ---------- Yearly price staircase (slide 4) ---------- */

#slide-4 .slide-inner.split { grid-template-columns: 0.85fr 1.15fr; }
.year-steps {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: end;
  gap: 8px;
  padding-top: 5.4rem; /* headroom for the lifted steps */
}
.year-step {
  min-width: 0;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 15px 12px 13px;
  text-align: center;
}
.step-year {
  font-family: var(--mono);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}
.step-price {
  font-size: clamp(1.35rem, 1.8vw, 1.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--navy);
  line-height: 1;
}
.step-label {
  font-family: var(--mono);
  font-size: 0.59rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 6px;
}
.step-detail { font-size: 0.72rem; color: var(--ink-soft); margin-top: 8px; border-top: 1px solid var(--line); padding-top: 7px; }
.step-delta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  color: var(--green);
  font-weight: 700;
  font-size: 0.9rem;
}
.step-delta .icon { width: 18px; height: 18px; stroke-width: 2; }

.figure-chart {
  grid-column: 1 / -1;
  margin-top: clamp(16px, 2.5vh, 28px);
  background: #fff;
  padding: clamp(12px, 1.5vw, 22px) clamp(14px, 2vw, 28px);
}
.figure-chart img { width: auto; max-width: 100%; height: auto; max-height: 46vh; object-fit: contain; margin-inline: auto; display: block; }

/* ---------- Timeline (slide 5) ---------- */

.timeline {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: clamp(14px, 2vw, 26px);
  align-items: stretch;
  margin-top: clamp(22px, 3.5vh, 38px);
}
.timeline-seg {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  padding: 20px 24px;
}
.seg-current { border-color: var(--green); }
.seg-renewal { border-style: dashed; }
.timeline-title { font-weight: 650; color: var(--navy); margin-bottom: 6px; }
.timeline-detail { font-size: 0.875rem; color: var(--ink-soft); }
.timeline-arrow { align-self: center; color: var(--ink-faint); width: 28px; height: 28px; }

/* ---------- Panels (slides 6, 8, 9) ---------- */

.split-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(16px, 2.4vw, 32px);
  align-items: stretch;
}
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  padding: clamp(22px, 3vh, 34px) clamp(22px, 2.2vw, 34px);
}
.panel-tag {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
}
.panel-operator .panel-tag { color: var(--navy); }
.panel-collaborator .panel-tag { color: var(--green); }
.panel-foot { margin-top: 18px; font-size: 0.8438rem; color: var(--ink-faint); }

.check-list { list-style: none; display: grid; gap: 12px; }
.check-list li {
  position: relative;
  padding-left: 28px;
  font-size: 1rem;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 12px;
  height: 7px;
  border-left: 2px solid var(--green);
  border-bottom: 2px solid var(--green);
  transform: rotate(-45deg);
}

/* Slide 8 components */
.slide-inner .split-panels:has(.component-panel) { grid-template-columns: 1fr auto 1fr; align-items: center; }
.component-panel { text-align: left; }
.component-num {
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--accent);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.component-value {
  font-size: clamp(2.125rem, 3.6vw, 3.375rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--green);
  margin-top: 10px;
  line-height: 1;
}
.component-unit {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 6px 0 14px;
}
.component-panel > p:last-child { color: var(--ink-soft); font-size: 0.9375rem; }
.component-plus {
  font-size: clamp(1.875rem, 3vw, 2.75rem);
  font-weight: 300;
  color: var(--ink-faint);
}

/* Slide 9 NOT / DOES */
.not-does {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(16px, 2.4vw, 32px);
  margin-bottom: clamp(20px, 3vh, 32px);
}
.panel-not { background: var(--paper-deep); box-shadow: none; }
.tag-not { color: var(--accent); }
.tag-does { color: var(--green); }
.not-does p:last-child { font-size: 1.0312rem; }

/* ---------- Formula component ---------- */

.formula-intro { color: var(--ink-soft); font-size: 0.9688rem; margin-bottom: 18px; max-width: 70ch; }
.formula {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}
.f-term {
  border-radius: 9px;
  padding: 12px 18px;
  font-size: clamp(0.8125rem, 1.15vw, 1rem);
  font-weight: 600;
  line-height: 1.3;
  box-shadow: var(--shadow-sm);
}
.f-result { background: var(--navy); color: #fdfcf9; }
.f-gain { background: var(--navy-tint); color: var(--navy); }
.f-rate { background: var(--accent-tint); color: var(--accent); }
.f-share { background: var(--green-tint); color: var(--green); }
.f-op { font-size: 1.375rem; font-weight: 300; color: var(--ink-faint); }
.formula-compact { margin-bottom: clamp(20px, 3vh, 30px); }
.formula-compact .f-term { padding: 8px 13px; font-size: 0.8125rem; }

/* ---------- Pool viz (slide 7) ---------- */

.pool-viz-wrap { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.pool-ring { width: min(100%, 30rem); }
.ring-track { fill: none; stroke: var(--paper-deep); stroke-width: 22; }
.ring-slice { fill: none; stroke: var(--green); stroke-width: 22; transition: stroke-dasharray 900ms var(--ease); }
.ring-big { font-size: 2.125rem; font-weight: 700; fill: var(--navy); font-family: var(--sans); letter-spacing: -0.02em; }
.ring-small { font-size: 0.6562rem; fill: var(--ink-faint); font-family: var(--mono); letter-spacing: 0.06em; }
.pool-legend { display: flex; gap: 22px; font-size: 0.8438rem; color: var(--ink-soft); flex-wrap: wrap; justify-content: center; }
.pool-legend span { display: inline-flex; align-items: center; gap: 8px; }
.swatch { width: 11px; height: 11px; border-radius: 3px; display: inline-block; }
.swatch-green { background: var(--green); }
.swatch-track { background: var(--paper-deep); border: 1px solid var(--line-strong); }

.lock-note {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  padding: 18px 22px;
  margin-top: 24px;
}
.lock-note .icon { color: var(--navy); margin-top: 2px; }
.lock-note p { font-size: 0.9062rem; color: var(--ink-soft); }
.lock-note p:first-child { color: var(--ink); margin-bottom: 4px; }

/* ---------- Worked example (slide 10) ---------- */

.calc-track {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  padding: 18px 22px;
  margin-bottom: 14px;
}
.calc-track-title {
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.track-num {
  color: var(--accent);
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.625rem;
}
.calc-chain { font-size: clamp(0.875rem, 1.25vw, 1.0312rem); color: var(--ink); padding: 3px 0; }
.calc-chain strong { font-weight: 700; }

.waterfall { margin-top: 20px; display: grid; gap: 10px; }
.wf-row {
  display: grid;
  grid-template-columns: 92px 1fr auto;
  align-items: center;
  gap: 12px;
}
.wf-label { font-family: var(--mono); font-size: 0.6562rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); }
.wf-bar { height: 22px; border-radius: 5px; transition: width var(--dur) var(--ease); min-width: 2px; }
.wf-interest { background: var(--navy); }
.wf-gain { background: var(--green); }
.wf-total { background: linear-gradient(90deg, var(--navy) 0 var(--wf-split, 50%), var(--green) var(--wf-split, 50%)); }
.wf-total-row { border-top: 1px solid var(--line); padding-top: 10px; }
.wf-val { font-size: 0.8438rem; font-weight: 650; color: var(--navy); }

/* ---------- Tiers (slide 11) ---------- */

.tier-selector { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.tier-btn {
  font-family: var(--mono);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 10px 22px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--card);
  color: var(--navy);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.tier-btn:hover { border-color: var(--navy); }
.tier-btn.active { background: var(--navy); border-color: var(--navy); color: #fdfcf9; }

.tier-panel {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  margin-bottom: clamp(18px, 3vh, 28px);
}
.stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  padding: 14px 16px;
}
.stat-label {
  font-family: var(--mono);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 8px;
  min-height: 2.2em;
}
.stat-value { font-size: clamp(1.125rem, 1.7vw, 1.625rem); font-weight: 700; letter-spacing: -0.01em; color: var(--navy); line-height: 1.05; }

/* ---------- Tables ---------- */

.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; background: var(--card); border-radius: 12px; box-shadow: var(--shadow-sm); overflow: hidden; }
th, td { text-align: left; padding: 12px 16px; font-size: 0.875rem; }
th {
  font-family: var(--mono);
  font-size: 0.6562rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink-faint);
  border-bottom: 1px solid var(--line-strong);
  background: var(--paper);
  white-space: nowrap;
}
td { border-bottom: 1px solid var(--line); color: var(--ink); }
tr:last-child td { border-bottom: none; }
td.num { font-variant-numeric: tabular-nums; }
.ph-row td { color: var(--ink-faint); font-family: var(--mono); font-size: 0.7812rem; }

/* ---------- Concept waterfall (slide 12) ---------- */

.concept-waterfall {
  display: flex;
  align-items: stretch;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.cw-step {
  flex: 1 1 160px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.cw-label { font-size: 0.875rem; color: var(--ink-soft); }
.cw-op { align-self: center; font-size: 1.625rem; font-weight: 300; color: var(--ink-faint); }
.cw-result { background: var(--card); border-color: var(--green); box-shadow: var(--shadow-md); }
.cw-result .cw-label { color: var(--navy); font-weight: 600; }
.cw-value { font-size: clamp(1.625rem, 2.6vw, 2.5rem); font-weight: 700; letter-spacing: -0.02em; margin-top: 6px; line-height: 1; }

/* Scenario control */
.scenario-control {
  margin-top: clamp(18px, 3vh, 28px);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  padding: 20px 24px;
}
.scenario-control label { font-size: 0.9062rem; color: var(--ink); display: block; margin-bottom: 12px; }
.scenario-tag {
  font-family: var(--mono);
  font-size: 0.6562rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid currentColor;
  border-radius: 999px;
  padding: 2px 10px;
  margin-right: 10px;
  vertical-align: 1px;
}
.scenario-row { display: flex; align-items: center; gap: 20px; }
.scenario-row output { font-size: clamp(1.25rem, 2vw, 1.75rem); font-weight: 700; color: var(--navy); min-width: 5.5em; text-align: right; }
.scenario-note { margin-top: 10px; font-size: 0.8125rem; color: var(--ink-faint); }

input[type="range"] {
  flex: 1;
  appearance: none;
  -webkit-appearance: none;
  height: 4px;
  border-radius: 2px;
  background: var(--paper-deep);
  outline-offset: 4px;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--navy);
  border: 3px solid var(--card);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--navy);
  border: 3px solid var(--card);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

/* ---------- Risk register (slide 13) ---------- */

.risk-list { border-top: 1px solid var(--line-strong); }
.risk-row {
  display: grid;
  grid-template-columns: 52px 240px 1fr;
  align-items: baseline;
  gap: 18px;
  padding: 19px 0;
  border-bottom: 1px solid var(--line);
}
.risk-row h3 { font-size: 1.0938rem; }
.risk-row p { font-size: 0.9688rem; color: var(--ink-soft); }
.risk-context { font-size: 0.8438rem; color: var(--ink-faint); margin-top: 6px; }

/* ---------- Journey (slide 14) ---------- */

.journey {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
  counter-reset: step;
  position: relative;
}
.journey li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  padding: 18px;
  text-align: center;
  position: relative;
}
.journey li:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -14px;
  top: 50%;
  width: 14px;
  height: 1px;
  background: var(--line-strong);
}
.journey-num {
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}
.journey p { font-size: 0.9062rem; font-weight: 550; color: var(--navy); }

.cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: clamp(24px, 4vh, 40px); }
.btn {
  display: inline-flex;
  align-items: center;
  border-radius: 9px;
  padding: 14px 26px;
  font-size: 0.9688rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform 150ms var(--ease), box-shadow 150ms var(--ease), background 150ms var(--ease);
}
.btn-primary { background: var(--navy); color: #fdfcf9; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--navy-deep); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-secondary { border: 1px solid var(--line-strong); color: var(--navy); background: var(--card); }
.btn-secondary:hover { border-color: var(--navy); transform: translateY(-1px); }

/* ---------- Appendices ---------- */

.appendix .table-wrap {
  max-height: 46vh;
  overflow-y: auto;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}
.appendix .table-wrap table { box-shadow: none; }
.appendix th { position: sticky; top: 0; z-index: 1; }

.appendix .slide-inner { background: transparent; }
.appendix .slide-meta { color: var(--ink-faint); }
.appendix h2 { font-size: clamp(1.375rem, 2.3vw, 2rem); color: var(--ink); }

.worked-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.worked-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  padding: 18px 22px;
}
.worked-amount { font-size: 1.3125rem; font-weight: 700; color: var(--navy); margin-bottom: 10px; }
.worked-line { font-size: 0.8438rem; color: var(--ink-soft); padding: 2px 0; }
.worked-total { margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--line); font-size: 0.9062rem; color: var(--ink); }
.worked-total strong { font-size: 1.0625rem; }

.doc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(12px, 1.6vw, 20px);
}
.doc-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  padding: 20px 22px;
}
.doc-card .icon { color: var(--navy); margin-bottom: 12px; }
.doc-card .ph-text { display: block; margin-top: 8px; }

/* ---------- Deck chrome ---------- */

.controls {
  position: fixed;
  bottom: calc(var(--frame) + 14px);
  right: calc(var(--frame) + 18px);
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: var(--shadow-md);
  padding: 6px 10px;
  z-index: 40;
}
.ctrl-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-soft);
  transition: background 150ms var(--ease), color 150ms var(--ease);
}
.ctrl-btn:hover { background: var(--paper-deep); color: var(--navy); }
.ctrl-btn .icon { width: 17px; height: 17px; }
.ctrl-sep { width: 1px; height: 18px; background: var(--line-strong); margin: 0 4px; }
.slide-counter {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ink-soft);
  min-width: 52px;
  text-align: center;
  letter-spacing: 0.04em;
}

.progress-track {
  position: fixed;
  left: var(--frame);
  right: var(--frame);
  bottom: var(--frame);
  height: 3px;
  background: transparent;
  z-index: 41;
}
.progress-fill {
  height: 100%;
  width: 0;
  background: var(--accent);
  border-radius: 0 2px 2px 0;
  transition: width var(--dur) var(--ease);
}

/* ---------- Overview ---------- */

.overview {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(15, 30, 48, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  flex-direction: column;
  padding: clamp(24px, 5vh, 64px) clamp(24px, 6vw, 96px);
  overflow-y: auto;
}
.overview[hidden] { display: none; }
.overview-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.overview-title {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #fdfcf9;
}
.overview .ctrl-btn { background: var(--card); }
.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.overview-item {
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
  background: var(--card);
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  padding: 14px 18px;
  font-size: 0.875rem;
  font-weight: 550;
  color: var(--navy);
  transition: transform 150ms var(--ease), box-shadow 150ms var(--ease);
}
.overview-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.ov-num {
  font-family: var(--mono);
  font-size: 0.6875rem;
  color: var(--accent);
  border: 1px solid var(--line);
  border-radius: 5px;
  min-width: 26px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.ov-appendix { background: var(--paper-deep); }

/* ---------- Per-slide scale-ups (canvas-commanding layouts) ---------- */

#slide-5 .hero-number { font-size: clamp(4rem, 8.5vw, 8.5rem); }
#slide-5 .hero-caption { font-size: 1.0625rem; }
#slide-5 .timeline { margin-top: clamp(30px, 5vh, 54px); }
#slide-5 .timeline-seg { padding: 30px 34px; }
#slide-5 .timeline-title { font-size: 1.25rem; }
#slide-5 .timeline-detail { font-size: 1rem; }
#slide-5 .body-note { font-size: 1.0312rem; margin-top: 30px; }

#slide-9 .not-does { margin-bottom: clamp(28px, 4.5vh, 44px); }
#slide-9 .panel { padding: clamp(26px, 3.6vh, 40px) clamp(26px, 2.6vw, 40px); }
#slide-9 .not-does p:last-child { font-size: clamp(1.0625rem, 1.5vw, 1.25rem); }
#slide-9 .formula-intro { font-size: clamp(1rem, 1.35vw, 1.1562rem); margin-bottom: 24px; }
#slide-9 .f-term { font-size: clamp(0.875rem, 1.15vw, 1.0625rem); padding: 15px 21px; }
#slide-9 .f-op { font-size: 1.625rem; }

#slide-14 .journey { gap: 18px; }
#slide-14 .journey li { padding: 30px 20px; }
#slide-14 .journey p { font-size: 1rem; }
#slide-14 .journey-num { width: 38px; height: 38px; font-size: 0.9375rem; margin-bottom: 16px; }
#slide-14 .journey li:not(:last-child)::after { right: -18px; width: 18px; }
#slide-14 .body-note { font-size: 1.0312rem; margin-top: 30px; }
#slide-14 .btn { padding: 18px 34px; font-size: 1.0625rem; }

/* ---------- Focus ---------- */

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ==========================================================================
   Responsive
   ========================================================================== */

/* Short viewports — 16:9 laptops and 720p/1080p-class projectors.
   Compress vertical rhythm so every slide fits without internal scrolling. */
@media (min-width: 821px) and (max-height: 820px) {
  :root { --frame: 10px; }
  .slide-meta { padding: 11px var(--content-pad) 9px; }
  .slide-inner { padding-top: clamp(12px, 2vh, 24px); padding-bottom: clamp(40px, 6vh, 56px); }
  h2 { margin-bottom: clamp(14px, 2.4vh, 24px); }
  .hero-number { font-size: clamp(2.75rem, 9vh, 5.25rem); }
  .hero-number-secondary { font-size: clamp(1.75rem, 5.4vh, 2.75rem); margin-top: 16px; }
  #slide-5 .hero-number { font-size: clamp(3.25rem, 12vh, 6.75rem); }
  #slide-5 .timeline { margin-top: 22px; }
  #slide-5 .timeline-seg { padding: 20px 26px; }
  .metric-card { padding: 14px 20px; }
  .metric-value { font-size: clamp(1.5rem, 4.4vh, 2.125rem); }
  .panel, #slide-9 .panel { padding: 20px 26px; }
  .support-line, .body-note { margin-top: 16px; }
  .emphasis-line { margin-top: 16px; padding-top: 12px; }
  .lock-note { margin-top: 16px; padding: 14px 18px; }
  .pool-ring { width: min(100%, 52vh); }
  .calc-track { padding: 14px 18px; margin-bottom: 10px; }
  .waterfall { margin-top: 14px; }
  .mini-chart { padding: 16px 20px; gap: 11px; }
  .figure-chart { margin-top: 12px; }
  .figure-chart img { max-height: 36vh; width: auto; max-width: 100%; margin-inline: auto; display: block; }
  .year-steps { padding-top: 4.9rem; }
  .figure-hero { aspect-ratio: auto; height: 50vh; }
  .figure-tall { aspect-ratio: auto; height: 56vh; }
  .figure-sm { aspect-ratio: auto; height: 24vh; margin-top: 14px; }
  .feature-list li { padding: 10px 0; }
  .risk-row { padding: 12px 0; }
  th, td { padding: 7px 9px; font-size: 0.78rem; }
  th { font-size: 0.615rem; }
  .tier-panel { margin-bottom: 14px; }
  .stat { padding: 10px 14px; }
  .stat-label { min-height: 0; }
  #slide-14 .journey li { padding: 20px 16px; }
  #slide-14 .journey-num { margin-bottom: 10px; }
  #slide-14 .cta-row { margin-top: 20px; }
  #slide-14 .btn { padding: 14px 28px; font-size: 1rem; }
  .scenario-control { margin-top: 14px; padding: 14px 20px; }
  .concept-waterfall { margin-bottom: 12px; }
  .cw-step { padding: 13px 16px; }
  .worked-card { padding: 11px 16px; }
  .worked-grid { gap: 9px; }
  .worked-line { font-size: 0.7812rem; }
  .worked-amount { font-size: 1.125rem; margin-bottom: 6px; }
  .worked-total { margin-top: 7px; padding-top: 7px; }
  .formula-compact { margin-bottom: 14px; }
}

/* Squarish displays (4:3 projectors, tablets) and narrow deck windows.
   Tighten horizontal rhythm; keep two-column splits but reduce their appetite. */
@media (min-width: 821px) and (max-aspect-ratio: 22/15), (min-width: 821px) and (max-width: 1180px) {
  :root { --content-pad: clamp(22px, 3vw, 44px); }
  .split { gap: clamp(20px, 3vw, 44px); }
  .split-panels, .not-does { gap: clamp(14px, 1.8vw, 24px); }
  .cover-grid { grid-template-columns: 1fr 0.9fr; gap: clamp(22px, 3vw, 44px); }
  .tier-panel { grid-template-columns: repeat(3, 1fr); }
  .metric-grid { gap: 12px; }
  .journey { gap: 10px; }
  .journey li:not(:last-child)::after { display: none; }
  .bar-row { grid-template-columns: 96px 1fr auto; gap: 10px; }
  th, td { padding: 8px 10px; font-size: 0.8rem; }
  th { font-size: 0.625rem; }
  .risk-row { grid-template-columns: 48px 190px 1fr; }
  .feature-list li { grid-template-columns: 40px 150px 1fr; padding: 9px 0; }
  .feature-list p { font-size: 0.8438rem; }
  .feature-list h3 { font-size: 0.9375rem; }
  .figure-tall { aspect-ratio: auto; height: 46vh; }
  .tag { font-size: 0.7188rem; padding: 3px 10px; }
  .tag-row { margin-top: 14px; gap: 6px; }
}

@media (max-width: 1100px) {
  .metric-grid, .doc-grid { grid-template-columns: repeat(2, 1fr); }
  .tier-panel { grid-template-columns: repeat(3, 1fr); }
  .journey { grid-template-columns: repeat(3, 1fr); }
  .journey li:nth-child(3n)::after { display: none; }
}

/* Scroll mode — the deck becomes a vertical document */
@media (max-width: 820px) {
  body { overflow: auto; background: var(--shell); }
  .deck {
    position: static;
    inset: auto;
    margin: 8px;
    border-radius: 10px;
  }
  .slide {
    position: static;
    opacity: 1;
    transform: none;
    pointer-events: auto;
    visibility: visible;
    min-height: 0;
    overflow: visible;
    border-bottom: 1px solid var(--line-strong);
  }
  .slide-inner {
    overflow: visible;
    padding: 26px 20px 40px;
    width: 100%;
  }
  .slide-inner::before, .slide-inner::after { display: none; }
  .slide-meta { padding: 14px 20px 10px; }
  .meta-right { display: none; }

  .cover-grid, .split, .not-does, .split-panels { grid-template-columns: 1fr; }
  .slide-inner .split-panels:has(.component-panel) { grid-template-columns: 1fr; }
  .component-plus { text-align: center; }
  .metric-grid, .metric-grid-narrow, .doc-grid, .worked-grid { grid-template-columns: 1fr; }
  .feature-list li { grid-template-columns: 36px 1fr; row-gap: 4px; }
  .feature-list li p { grid-column: 2; }
  .risk-row { grid-template-columns: 40px 1fr; row-gap: 6px; }
  .risk-row > div { grid-column: 2; }
  .tier-panel { grid-template-columns: repeat(2, 1fr); }
  .journey { grid-template-columns: 1fr; }
  .journey li::after { display: none; }
  .timeline { grid-template-columns: 1fr; }
  .timeline-arrow { transform: rotate(90deg); margin: 0 auto; }
  .concept-waterfall { flex-direction: column; }
  .cw-op { align-self: flex-start; padding-left: 18px; }

  /* Tables collapse to stacked cards */
  .appendix .table-wrap { max-height: none; overflow-y: visible; box-shadow: none; }
  .tier-table thead, .data-table thead { display: none; }
  .tier-table, .data-table, .tier-table tbody, .data-table tbody,
  .tier-table tr, .data-table tr, .tier-table td, .data-table td { display: block; width: 100%; }
  .tier-table tr, .data-table tr {
    border: 1px solid var(--line);
    border-radius: 10px;
    margin-bottom: 12px;
    background: var(--card);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
  }
  .tier-table td, .data-table td {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    border-bottom: 1px solid var(--line);
    font-size: 0.8438rem;
  }
  .tier-table td::before, .data-table td::before {
    content: attr(data-label);
    font-family: var(--mono);
    font-size: 0.6562rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-faint);
    align-self: center;
  }

  .controls { bottom: 12px; right: 12px; }
  #btn-prev, #btn-next, .slide-counter, .ctrl-sep, #btn-fullscreen { display: none; }
  .progress-track { display: none; }

  .hero-number { font-size: clamp(2.75rem, 13vw, 4rem); }
  h1.cover-title { font-size: clamp(2.25rem, 10vw, 3.5rem); }
}