@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap");

/* ── Tokens ── */
:root {
  --bg: #f6f6f7;
  --surface: #ffffff;
  --surface-2: #fbfbfc;
  --border: #e7e7ea;
  --border-strong: #c7c7cd;
  --text: #18181b;
  --muted: #71717a;
  --dim: #d4d4d8;

  /* brand accent — single, restrained */
  --brand: #0f766e;
  --brand-strong: #0c5d56;
  --brand-soft: #e6f4f3;
  --brand-glow: rgba(15, 118, 110, 0.16);
  --brand-line: rgba(15, 118, 110, 0.32);

  /* title slide palette */
  --title-bg: #0a0a0b;
  --title-bg-2: #1c1c1f;

  /* radii */
  --r-sm: 4px;
  --r-md: 6px;
  --r-lg: 10px;

  /* shadows — two-layer (ambient + key) */
  --shadow-sm:
    0 1px 1px rgba(24, 24, 27, 0.03),
    0 1px 2px rgba(24, 24, 27, 0.04);
  --shadow-md:
    0 1px 2px rgba(24, 24, 27, 0.04),
    0 8px 24px -10px rgba(24, 24, 27, 0.1);
  --shadow-lift:
    0 2px 4px rgba(24, 24, 27, 0.05),
    0 16px 32px -16px rgba(15, 118, 110, 0.18);

  /* motion */
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --t-fast: 0.18s;
  --t-med: 0.32s;
  --t-slow: 0.55s;
}

/* ── Base ── */
.reveal {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  font-weight: 400;
  font-feature-settings: "ss01", "cv11", "tnum";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.reveal .slides section.slide-content {
  background: var(--bg) !important;
  padding-top: 0.6em;
}

.reveal .slide-inner {
  padding: 0.2em 0.5em 1.6em;
  position: relative;
  min-height: 100%;
}

/* slide footer reserves space so content doesn't get covered */
.reveal .slide-inner {
  padding-bottom: 1.6em;
}

/* ── Reveal.js chrome overrides ── */
.reveal .progress {
  height: 2px;
  background: rgba(24, 24, 27, 0.08);
}
.reveal .progress span {
  background: linear-gradient(90deg, var(--brand) 0%, var(--brand-strong) 100%);
  transition: transform var(--t-med) var(--ease);
}

.reveal .controls {
  bottom: 14px;
  right: 18px;
  color: var(--muted);
}
.reveal .controls button {
  opacity: 0.6;
  transition: opacity var(--t-fast) var(--ease);
}
.reveal .controls button:hover {
  opacity: 1;
  color: var(--brand);
}

/* ── Typography ── */
.reveal h1,
.reveal h2,
.reveal h3 {
  font-weight: 600;
  text-transform: none;
  letter-spacing: -0.03em;
  color: var(--text);
}

.reveal h2 {
  font-size: 1.75em;
  margin: 0 0 0.4em;
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.reveal h2::after {
  content: "";
  display: block;
  width: 36px;
  height: 2px;
  margin: 0.45em auto 0;
  background: var(--brand);
  border-radius: 2px;
  transition: width var(--t-med) var(--ease);
}

.reveal .slides > section.slide-content.present h2::after {
  width: 56px;
}

.reveal h3 {
  letter-spacing: -0.02em;
}

.reveal .section-tag {
  display: inline-block;
  font-size: 0.36em;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--brand);
  margin-bottom: 0.55em;
  position: relative;
  padding-left: 1.6em;
}
.reveal .section-tag::before {
  content: attr(data-num);
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  letter-spacing: 0.04em;
  font-weight: 500;
}
.reveal .section-tag::after {
  content: "";
  position: absolute;
  left: 0.85em;
  top: 50%;
  width: 0.5em;
  height: 1px;
  background: var(--border-strong);
}

/* ── Title slide — gradient + grid + glow ── */
.reveal .title-slide {
  background:
    radial-gradient(
      ellipse 80% 60% at 50% 0%,
      rgba(15, 118, 110, 0.12) 0%,
      transparent 60%
    ),
    radial-gradient(
      ellipse 60% 50% at 50% 100%,
      rgba(15, 118, 110, 0.06) 0%,
      transparent 70%
    ),
    linear-gradient(180deg, var(--title-bg-2) 0%, var(--title-bg) 100%) !important;
  position: relative;
  overflow: hidden;
}
.reveal .title-slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
    circle at 1px 1px,
    rgba(255, 255, 255, 0.04) 1px,
    transparent 1px
  );
  background-size: 28px 28px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 80%);
  pointer-events: none;
}
.reveal .title-slide::after {
  content: "";
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    rgba(15, 118, 110, 0.18) 0%,
    transparent 70%
  );
  filter: blur(40px);
  pointer-events: none;
  animation: titleGlow 8s var(--ease) infinite alternate;
}
@keyframes titleGlow {
  0% {
    transform: translateX(-50%) scale(1);
    opacity: 0.7;
  }
  100% {
    transform: translateX(-50%) scale(1.1);
    opacity: 1;
  }
}

.reveal .title-inner {
  position: relative;
  z-index: 1;
}

.reveal .hero-eyebrow {
  font-size: 0.42em;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #a1a1aa;
  margin-bottom: 1.1em;
  display: inline-flex;
  align-items: center;
  gap: 0.8em;
}
.reveal .hero-eyebrow::before,
.reveal .hero-eyebrow::after {
  content: "";
  width: 18px;
  height: 1px;
  background: #52525b;
}
.reveal .title-slide .hero-eyebrow {
  color: #d4d4d8;
}
.reveal .title-slide .hero-eyebrow::before,
.reveal .title-slide .hero-eyebrow::after {
  background: var(--brand);
  opacity: 0.7;
}

.reveal .title-slide h1,
.reveal .title-slide h2 {
  color: #fafafa;
  font-size: 2.25em;
  font-weight: 600;
  letter-spacing: -0.045em;
  margin: 0.15em 0;
  line-height: 1.05;
  background: linear-gradient(180deg, #fafafa 0%, #d4d4d8 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.reveal .title-slide h2::after {
  background: var(--brand);
  width: 48px;
  margin-left: auto;
  margin-right: auto;
  box-shadow: 0 0 12px var(--brand-glow);
}

.reveal .title-slide .subtitle {
  color: #a1a1aa;
  font-size: 0.78em;
  font-weight: 400;
  max-width: 70%;
  margin: 0.7em auto 0;
  line-height: 1.55;
  letter-spacing: -0.01em;
}

.reveal .title-slide .meta {
  color: #71717a;
  font-size: 0.5em;
  margin-top: 2em;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}

.reveal .hero-divider {
  width: 48px;
  height: 1px;
  background: var(--brand);
  margin: 1.4em auto;
  box-shadow: 0 0 8px var(--brand-glow);
}

.reveal .hero-points {
  display: flex;
  justify-content: center;
  gap: 2.2rem;
  margin-top: 1.8rem;
  flex-wrap: wrap;
}

.reveal .hero-point {
  text-align: left;
  font-size: 0.42em;
  color: #d4d4d8;
  max-width: 170px;
  padding: 0.6em 0.8em;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.02);
  backdrop-filter: blur(4px);
  transition: all var(--t-med) var(--ease);
}
.reveal .hero-point:hover {
  border-color: var(--brand-line);
  background: rgba(15, 118, 110, 0.06);
  transform: translateY(-2px);
}

.reveal .hero-point strong {
  display: block;
  color: #fafafa;
  font-weight: 600;
  font-size: 1.08em;
  margin-bottom: 0.25em;
  letter-spacing: -0.02em;
}

.reveal .hero-point span {
  color: #a1a1aa;
  font-weight: 400;
  line-height: 1.45;
  font-size: 0.95em;
}

.reveal .badge-row {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.reveal .badge {
  font-size: 0.42em;
  font-weight: 500;
  padding: 0.35em 0.75em;
  border: 1px solid #3f3f46;
  color: #a1a1aa;
  border-radius: var(--r-sm);
  letter-spacing: 0.04em;
  transition: all var(--t-fast) var(--ease);
}
.reveal .badge:hover {
  border-color: var(--brand-line);
  color: #fafafa;
}

/* ── Content ── */
.reveal .lead {
  font-size: 0.68em;
  color: var(--muted);
  max-width: 80%;
  margin: 0 auto 1em;
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: -0.005em;
}

/* ── Client narrative blocks ── */
.reveal .solution-flow {
  display: grid;
  grid-template-columns: 1fr 52px 1fr 52px 1fr;
  align-items: stretch;
  gap: 0.35rem;
  max-width: 94%;
  margin: 0 auto;
  text-align: left;
}

.reveal .solution-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 1em 0.95em;
  box-shadow: var(--shadow-sm);
  min-height: 150px;
  position: relative;
  overflow: hidden;
}

.reveal .solution-card-accent {
  border-color: var(--brand);
  background: linear-gradient(180deg, var(--surface) 0%, var(--brand-soft) 100%);
  box-shadow:
    0 1px 2px rgba(24, 24, 27, 0.04),
    0 0 0 4px var(--brand-glow);
}

.reveal .solution-icon {
  width: 2em;
  height: 2em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--text);
  color: #fafafa;
  font-size: 0.44em;
  font-weight: 700;
  margin-bottom: 0.8em;
  font-variant-numeric: tabular-nums;
}

.reveal .solution-card-accent .solution-icon {
  background: var(--brand);
}

.reveal .solution-card strong {
  display: block;
  font-size: 0.62em;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 0.45em;
}

.reveal .solution-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.46em;
  line-height: 1.5;
}

.reveal .solution-line {
  align-self: center;
  height: 1px;
  background: linear-gradient(90deg, var(--border-strong), var(--brand));
  position: relative;
}

.reveal .solution-line::after {
  content: "";
  position: absolute;
  right: -3px;
  top: -3px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--brand);
}

.reveal .value-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  max-width: 92%;
  margin: 0 auto;
  text-align: left;
}

.reveal .value-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 0.9em 1em 0.95em;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: all var(--t-med) var(--ease);
}

.reveal .value-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

.reveal .value-card span {
  display: inline-block;
  font-size: 0.38em;
  font-weight: 700;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: var(--r-sm);
  padding: 0.18em 0.5em;
  margin-bottom: 0.6em;
  font-variant-numeric: tabular-nums;
}

.reveal .value-card strong {
  display: block;
  font-size: 0.58em;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 0.35em;
}

.reveal .value-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.44em;
  line-height: 1.45;
}

.reveal .slide-content[data-section="Решение"] .slide-inner,
.reveal .slide-content[data-section="Ценность"] .slide-inner {
  padding-top: 0;
}

.reveal .slide-content[data-section="Решение"] h2,
.reveal .slide-content[data-section="Ценность"] h2 {
  font-size: 1.48em;
  margin-bottom: 0.28em;
}

.reveal .slide-content[data-section="Решение"] h2::after,
.reveal .slide-content[data-section="Ценность"] h2::after {
  margin-top: 0.3em;
}

.reveal .slide-content[data-section="Решение"] .lead {
  font-size: 0.58em;
  margin-bottom: 0.72em;
}

.reveal .slide-content[data-section="Решение"] .solution-card {
  min-height: 112px;
  padding: 0.72em 0.78em;
}

.reveal .slide-content[data-section="Решение"] .solution-icon {
  width: 1.72em;
  height: 1.72em;
  margin-bottom: 0.55em;
}

.reveal .slide-content[data-section="Решение"] .solution-card strong {
  font-size: 0.55em;
  margin-bottom: 0.3em;
}

.reveal .slide-content[data-section="Решение"] .solution-card p {
  font-size: 0.39em;
  line-height: 1.35;
}

.reveal .slide-content[data-section="Ценность"] .value-grid {
  gap: 0.52rem;
  max-width: 90%;
}

.reveal .slide-content[data-section="Ценность"] .value-card {
  padding: 0.62em 0.78em;
}

.reveal .slide-content[data-section="Ценность"] .value-card span {
  margin-bottom: 0.42em;
}

.reveal .slide-content[data-section="Ценность"] .value-card strong {
  font-size: 0.52em;
  margin-bottom: 0.25em;
}

.reveal .slide-content[data-section="Ценность"] .value-card p {
  font-size: 0.38em;
  line-height: 1.32;
}

/* ── Cards ── */
.reveal .cards {
  display: grid;
  gap: 0.85rem;
}

.reveal .cards.three {
  grid-template-columns: repeat(3, 1fr);
}

.reveal .card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 1.1em 1em 1em;
  text-align: left;
  box-shadow: var(--shadow-sm);
  position: relative;
  transition: all var(--t-med) var(--ease);
  overflow: hidden;
}
/* top accent bar */
.reveal .card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--brand) 0%, var(--brand-strong) 100%);
  opacity: 0;
  transition: opacity var(--t-med) var(--ease);
}
.reveal .card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
  border-color: var(--border-strong);
}
.reveal .card:hover::before {
  opacity: 1;
}

.reveal .card h3 {
  font-size: 0.68em;
  margin: 0 0 0.4em;
  color: var(--text);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.reveal .card p {
  font-size: 0.5em;
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.reveal .card-label {
  font-size: 0.4em;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--brand);
  margin-bottom: 0.55em;
  display: block;
  font-variant-numeric: tabular-nums;
}

/* ── Feature grid ── */
.reveal .feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  font-size: 0.46em;
}

.reveal .feature-pill {
  padding: 0.7em 0.85em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  font-weight: 500;
  color: var(--text);
  text-align: left;
  transition: all var(--t-fast) var(--ease);
  position: relative;
  letter-spacing: -0.01em;
}
.reveal .feature-pill::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 2px;
  height: 0;
  background: var(--brand);
  border-radius: 1px;
  transition: height var(--t-med) var(--ease);
}
.reveal .feature-pill:hover {
  border-color: var(--border-strong);
  padding-left: 1.05em;
}
.reveal .feature-pill:hover::before {
  height: 60%;
}

/* ── Goals ── */
.reveal .goals-list {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  font-size: 0.58em;
  text-align: left;
  max-width: 88%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.reveal .goals-list li {
  display: flex;
  align-items: center;
  gap: 1em;
  padding: 0.7em 1em;
  border-bottom: 1px solid var(--border);
  transition: background var(--t-fast) var(--ease);
}
.reveal .goals-list li:last-child {
  border-bottom: none;
}
.reveal .goals-list li:hover {
  background: var(--surface-2);
}

.reveal .goals-list .num {
  flex-shrink: 0;
  width: 1.8em;
  height: 1.8em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--brand);
  font-size: 0.85em;
  font-variant-numeric: tabular-nums;
  background: var(--brand-soft);
  border-radius: var(--r-sm);
  letter-spacing: 0.02em;
}

/* ── Roles ── */
.reveal .role-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
}

.reveal .role-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 1.1em 1em 1em;
  text-align: left;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--t-med) var(--ease);
}
.reveal .role-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 2px;
  background: var(--brand);
  opacity: 0;
  transition: opacity var(--t-med) var(--ease);
}
.reveal .role-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
  border-color: var(--border-strong);
}
.reveal .role-card:hover::before {
  opacity: 1;
}

.reveal .role-card h3 {
  font-size: 0.7em;
  margin: 0 0 0.3em;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.reveal .role-card p {
  font-size: 0.5em;
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.reveal .role-card .access {
  margin-top: 0.75em;
  padding-top: 0.6em;
  border-top: 1px solid var(--border);
  font-size: 0.45em;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.01em;
}

/* ── Architecture diagram ── */
.reveal .arch-diagram {
  max-width: 96%;
  margin: 0 auto;
  font-size: 0.42em;
}

.reveal .diagram-layer {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 0.7em 0.85em 0.85em;
  box-shadow: var(--shadow-sm);
  transition: all var(--t-med) var(--ease);
}
.reveal .diagram-layer:hover {
  box-shadow: var(--shadow-md);
}

.reveal .diagram-layer-core {
  border-color: var(--brand);
  border-width: 1.5px;
  background:
    linear-gradient(180deg, var(--surface) 0%, var(--brand-soft) 100%);
  box-shadow:
    0 1px 2px rgba(24, 24, 27, 0.04),
    0 0 0 4px var(--brand-glow),
    0 12px 32px -16px rgba(15, 118, 110, 0.25);
}

.reveal .layer-tag {
  display: block;
  font-size: 0.7em;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--muted);
  margin-bottom: 0.5em;
  text-align: left;
}
.reveal .diagram-layer-core .layer-tag {
  color: var(--brand);
}

.reveal .layer-row {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.reveal .layer-row-sub {
  margin-top: 0.5em;
  padding-top: 0.5em;
  border-top: 1px dashed var(--border);
}

.reveal .diagram-node {
  flex: 1;
  min-width: 100px;
  max-width: 160px;
  padding: 0.55em 0.6em;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  text-align: left;
  transition: all var(--t-fast) var(--ease);
}
.reveal .diagram-node:hover {
  border-color: var(--border-strong);
  background: var(--surface);
}

.reveal .diagram-node strong {
  display: block;
  font-weight: 600;
  font-size: 1.05em;
  margin-bottom: 0.18em;
  letter-spacing: -0.01em;
}

.reveal .diagram-node span {
  color: var(--muted);
  font-size: 0.88em;
  line-height: 1.3;
}

.reveal .diagram-node-core {
  background: var(--text);
  border-color: var(--text);
  color: #fafafa;
}
.reveal .diagram-node-core:hover {
  background: var(--brand-strong);
  border-color: var(--brand-strong);
}

.reveal .diagram-node-core span {
  color: #a1a1aa;
}

.reveal .diagram-node-store {
  text-align: center;
  font-weight: 600;
  font-size: 0.95em;
  max-width: 150px;
  background: var(--surface-2);
}

.reveal .arch-diagram-client {
  max-width: 86%;
}

.reveal .diagram-node-assist {
  max-width: 220px;
  text-align: center;
  background: var(--surface);
}

.reveal .diagram-node-assist img {
  display: block;
  width: 118px;
  height: auto;
  margin: 0 auto 0.35em;
}

.reveal .diagram-node-assist span {
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.72em;
}

.reveal .diagram-vflow {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.18em 0;
  position: relative;
}

.reveal .vflow-line {
  width: 1px;
  height: 10px;
  background: var(--border-strong);
  position: relative;
  overflow: hidden;
}
.reveal .vflow-line::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--brand);
  transform: translateY(-100%);
  animation: flowDown 1.6s var(--ease) infinite;
}
@keyframes flowDown {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(100%);
  }
}

.reveal .vflow-label {
  font-size: 0.72em;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  padding: 0.15em 0.5em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
}

.reveal .diagram-caption {
  margin-top: 0.65em;
  font-size: 0.42em;
  color: var(--muted);
  text-align: center;
  font-style: italic;
}

/* compact layout for slides with tall diagrams */
.reveal .slide-content.slide-arch h2 {
  font-size: 1.5em;
  margin-bottom: 0.35em;
}
.reveal .slide-content.slide-arch h2::after {
  margin: 0.3em auto 0;
}
.reveal .slide-content.slide-arch .arch-diagram {
  font-size: 0.38em;
  max-width: 98%;
}
.reveal .slide-content.slide-arch .diagram-layer {
  padding: 0.5em 0.7em 0.6em;
}
.reveal .slide-content.slide-arch .diagram-node {
  padding: 0.4em 0.5em;
  min-width: 90px;
  max-width: 150px;
}
.reveal .slide-content.slide-arch .diagram-node strong {
  margin-bottom: 0.1em;
}
.reveal .slide-content.slide-arch .diagram-node span {
  line-height: 1.25;
}
.reveal .slide-content.slide-arch .layer-row-sub {
  margin-top: 0.35em;
  padding-top: 0.35em;
}
.reveal .slide-content.slide-arch .diagram-vflow {
  padding: 0.1em 0;
}
.reveal .slide-content.slide-arch .vflow-line {
  height: 6px;
}
.reveal .slide-content.slide-arch .vflow-label {
  font-size: 0.65em;
  padding: 0.1em 0.4em;
}
.reveal .slide-content.slide-arch .diagram-caption {
  margin-top: 0.4em;
  font-size: 0.4em;
}
.reveal .slide-content.slide-arch .layer-tag {
  margin-bottom: 0.3em;
  font-size: 0.65em;
}

/* ── Payment sequence (horizontal) ── */
.reveal .seq-diagram {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0.2rem;
  flex-wrap: nowrap;
  max-width: 98%;
  margin: 0 auto;
  font-size: 0.38em;
}

.reveal .seq-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  min-width: 0;
  max-width: 150px;
}

.reveal .seq-num {
  width: 1.6em;
  height: 1.6em;
  border-radius: 50%;
  border: 1.5px solid var(--border-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.85em;
  color: var(--muted);
  margin-bottom: 0.4em;
  background: var(--surface);
  transition: all var(--t-med) var(--ease);
}
.reveal .seq-step:hover .seq-num {
  background: var(--brand);
  border-color: var(--brand);
  color: #fafafa;
  transform: scale(1.05);
}

.reveal .seq-box {
  width: 100%;
  padding: 0.6em 0.55em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--t-fast) var(--ease);
}
.reveal .seq-box:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

.reveal .seq-box strong {
  display: block;
  font-weight: 600;
  margin-bottom: 0.22em;
  letter-spacing: -0.01em;
}

.reveal .seq-box span {
  color: var(--muted);
  font-size: 0.85em;
  line-height: 1.3;
}

.reveal .seq-box-ext {
  border-color: var(--brand);
  border-width: 1.5px;
  background:
    linear-gradient(180deg, var(--surface) 0%, var(--brand-soft) 100%);
}

.reveal .seq-arrow {
  color: var(--muted);
  font-size: 1.1em;
  padding-top: 1.7em;
  flex-shrink: 0;
  font-weight: 300;
  transition: color var(--t-fast) var(--ease);
}
.reveal .seq-diagram:hover .seq-arrow {
  color: var(--brand);
}

.reveal .seq-legend {
  display: flex;
  justify-content: center;
  gap: 1.4rem;
  margin-top: 0.85em;
  font-size: 0.42em;
  color: var(--muted);
  flex-wrap: wrap;
}

.reveal .seq-legend span {
  display: flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.25em 0.6em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
}

.reveal .leg-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  font-style: normal;
}

.reveal .leg-site {
  background: var(--bg);
  border: 1px solid var(--border-strong);
}

.reveal .leg-core {
  background: var(--text);
}

.reveal .leg-ext {
  background: var(--brand-soft);
  border: 1.5px solid var(--brand);
}

/* ── Payment swimlane chart ── */
.reveal .payment-layout {
  display: grid;
  grid-template-columns: 1fr 230px;
  gap: 0.85rem;
  align-items: start;
  font-size: 0.4em;
  text-align: left;
}

.reveal .payment-flow-chart {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.reveal .pfc-lane {
  border-right: 1px solid var(--border);
  padding: 0.55em 0.45em 0.65em;
  background: var(--surface);
  transition: background var(--t-fast) var(--ease);
}
.reveal .pfc-lane:hover {
  background: var(--surface-2);
}

.reveal .pfc-lane:last-child {
  border-right: none;
}

.reveal .pfc-lane-core {
  background:
    linear-gradient(180deg, var(--brand-soft) 0%, var(--surface) 60%);
}

.reveal .pfc-lane-title {
  font-size: 0.72em;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  padding-bottom: 0.45em;
  margin-bottom: 0.4em;
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.reveal .pfc-lane-core .pfc-lane-title {
  color: var(--brand);
}

.reveal .pfc-track {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.reveal .pfc-node {
  width: 100%;
  padding: 0.45em 0.4em;
  text-align: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  font-weight: 500;
  font-size: 0.9em;
  transition: all var(--t-fast) var(--ease);
}
.reveal .pfc-node:hover {
  border-color: var(--border-strong);
  transform: translateX(2px);
}

.reveal .pfc-node-muted {
  color: var(--muted);
  border-style: dashed;
}

.reveal .pfc-node-core {
  background: var(--text);
  border-color: var(--text);
  color: #fafafa;
  font-weight: 600;
}
.reveal .pfc-node-core:hover {
  background: var(--brand-strong);
  border-color: var(--brand-strong);
}

.reveal .pfc-node-ext {
  border-width: 1.5px;
  border-color: var(--brand);
  background: var(--brand-soft);
  color: var(--brand-strong);
  font-weight: 600;
}
.reveal .pfc-node-ext:hover {
  background: var(--brand);
  color: #fafafa;
}

.reveal .pfc-arrow {
  color: var(--muted);
  font-size: 0.85em;
  line-height: 1;
  padding: 0.15em 0;
  transition: color var(--t-fast) var(--ease);
}
.reveal .pfc-track:hover .pfc-arrow {
  color: var(--brand);
}

.reveal .payment-side {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.reveal .payment-side .bullet-list {
  font-size: 1em;
  margin: 0;
  padding: 0.8em 0.9em 0.8em 1.6em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-sm);
  list-style: none;
}
.reveal .payment-side .bullet-list li {
  position: relative;
  padding-left: 0.2em;
  margin-bottom: 0.3em;
  line-height: 1.45;
}
.reveal .payment-side .bullet-list li::before {
  content: "";
  position: absolute;
  left: -0.9em;
  top: 0.55em;
  width: 4px;
  height: 4px;
  background: var(--brand);
  border-radius: 50%;
}

.reveal .payment-side .panel-box {
  padding: 0.7em 0.85em;
}

/* ── Security ── */
.reveal .security-list {
  font-size: 0.58em;
  text-align: left;
  max-width: 84%;
  margin: 0 auto;
  list-style: none;
  padding: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.reveal .security-list li {
  padding: 0.85em 1.1em;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  line-height: 1.5;
  display: flex;
  align-items: flex-start;
  gap: 0.75em;
  position: relative;
  padding-left: 2.2em;
  transition: background var(--t-fast) var(--ease);
}
.reveal .security-list li:last-child {
  border-bottom: none;
}
.reveal .security-list li:hover {
  background: var(--surface-2);
}
.reveal .security-list li::before {
  content: "✓";
  position: absolute;
  left: 0.85em;
  top: 0.95em;
  width: 1em;
  height: 1em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 0.85em;
  font-weight: 700;
  border-radius: 50%;
}

.reveal .security-list strong {
  font-weight: 600;
  color: var(--brand-strong);
}

/* ── Hierarchy ── */
.reveal .hierarchy-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 0.42em;
}

.reveal .h-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.12em;
  padding: 0.6em 1.2em;
  font-size: 1em;
  font-weight: 500;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  min-width: 120px;
  transition: all var(--t-fast) var(--ease);
  box-shadow: var(--shadow-sm);
}
.reveal .h-node:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.reveal .h-node strong {
  font-weight: 600;
  letter-spacing: -0.01em;
}

.reveal .h-node em {
  font-size: 0.75em;
  font-style: normal;
  color: var(--muted);
  font-weight: 400;
}

.reveal .h-root,
.reveal .h-hotel {
  background: var(--text);
  border-color: var(--text);
  color: #fafafa;
  box-shadow:
    0 1px 2px rgba(24, 24, 27, 0.04),
    0 0 0 3px var(--brand-glow);
}
.reveal .h-root:hover,
.reveal .h-hotel:hover {
  background: var(--brand-strong);
  border-color: var(--brand-strong);
  box-shadow:
    0 4px 12px rgba(15, 118, 110, 0.2),
    0 0 0 4px var(--brand-glow);
}

.reveal .h-root em,
.reveal .h-hotel em {
  color: #a1a1aa;
}

.reveal .h-row {
  display: flex;
  gap: 0.85rem;
  justify-content: center;
}

.reveal .h-connector-v {
  width: 1px;
  height: 16px;
  background: var(--border-strong);
  position: relative;
}
.reveal .h-connector-v::after {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 5px;
  height: 5px;
  background: var(--brand);
  border-radius: 50%;
  opacity: 0;
  animation: pulseDot 2s var(--ease) infinite;
}
@keyframes pulseDot {
  0%, 100% { opacity: 0; }
  50% { opacity: 1; }
}

.reveal .h-connector-short {
  height: 12px;
}

.reveal .h-objects-label {
  font-size: 0.46em;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.reveal .h-objects-label em {
  font-style: normal;
  font-weight: 500;
  color: var(--text);
}

.reveal .h-hotels-row {
  display: flex;
  gap: 0.85rem;
  justify-content: center;
  align-items: flex-start;
  width: 100%;
  max-width: 98%;
}

.reveal .h-hotel-branch {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  max-width: 220px;
}

.reveal .h-hotel-branch.h-hotel-more {
  justify-content: center;
  min-width: 70px;
}

.reveal .h-node.h-hotel span {
  font-size: 0.8em;
  font-weight: 400;
  color: #a1a1aa;
  display: block;
  margin-top: 0.12em;
}

.reveal .h-hotel-more .h-node.h-hotel {
  background: var(--surface);
  border: 1px dashed var(--border-strong);
  color: var(--muted);
  box-shadow: none;
}
.reveal .h-hotel-more .h-node.h-hotel:hover {
  transform: none;
}

.reveal .h-hotel-more .h-node.h-hotel strong {
  color: var(--muted);
}

.reveal .h-leaves {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0.35rem;
  width: 100%;
  max-width: 96%;
}

.reveal .h-leaves-sm {
  grid-template-columns: repeat(2, 1fr);
  width: 100%;
  gap: 0.3rem;
}

.reveal .h-leaf {
  font-size: 0.4em;
  font-weight: 500;
  padding: 0.4em 0.3em;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text);
  transition: all var(--t-fast) var(--ease);
  letter-spacing: -0.01em;
}
.reveal .h-leaf:hover {
  border-color: var(--brand);
  color: var(--brand);
  background: var(--brand-soft);
}

.reveal .h-footnote {
  margin-top: 0.7em;
  font-size: 0.42em;
  color: var(--muted);
  font-weight: 400;
  max-width: 92%;
  font-style: italic;
}

/* ── Modules ── */
.reveal .module-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  font-size: 0.48em;
}

.reveal .module-item {
  padding: 0.7em 0.9em;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  font-weight: 500;
  text-align: left;
  letter-spacing: -0.01em;
  position: relative;
  padding-left: 1.8em;
  transition: all var(--t-fast) var(--ease);
  box-shadow: var(--shadow-sm);
}
.reveal .module-item::before {
  content: "";
  position: absolute;
  left: 0.85em;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border: 1.5px solid var(--brand);
  border-radius: 50%;
  background: var(--brand-soft);
  transition: all var(--t-fast) var(--ease);
}
.reveal .module-item:hover {
  border-color: var(--brand);
  color: var(--brand-strong);
}
.reveal .module-item:hover::before {
  background: var(--brand);
  transform: translateY(-50%) scale(1.15);
}

.reveal .module-grid-client {
  max-width: 92%;
  margin: 0 auto;
}

/* ── Product screenshots ── */
.reveal .screenshot-layout {
  display: grid;
  grid-template-columns: 0.84fr 1.16fr;
  gap: 0.7rem;
  align-items: stretch;
  max-width: 94%;
  margin: 0 auto;
  text-align: left;
}

.reveal .screenshot-layout-control {
  grid-template-columns: 1.22fr 0.78fr;
}

.reveal .screenshot-points {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.38rem;
  align-content: center;
}

.reveal .screenshot-points .module-item {
  font-size: 0.43em;
  padding-top: 0.55em;
  padding-bottom: 0.55em;
}

.reveal .screenshot-frame {
  margin: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  min-height: 0;
}

.reveal .screenshot-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.reveal .screenshot-layout-admin .screenshot-frame {
  aspect-ratio: 1.56;
}

.reveal .screenshot-layout-control .screenshot-frame {
  aspect-ratio: 1.62;
}

.reveal .slide-content[data-section="Администратор"] .slide-inner,
.reveal .slide-content[data-section="Контроль"] .slide-inner {
  padding-top: 0;
}

.reveal .slide-content[data-section="Администратор"] h2,
.reveal .slide-content[data-section="Контроль"] h2 {
  font-size: 1.45em;
  margin-bottom: 0.28em;
}

.reveal .slide-content[data-section="Администратор"] h2::after,
.reveal .slide-content[data-section="Контроль"] h2::after {
  margin-top: 0.3em;
}

.reveal .slide-content[data-section="Администратор"] .lead {
  font-size: 0.56em;
  margin-bottom: 0.65em;
}

/* ── Panels ── */
.reveal .two-cols-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  text-align: left;
  font-size: 0.6em;
}

.reveal .panel-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 0.9em 1.05em;
  box-shadow: var(--shadow-sm);
  transition: all var(--t-fast) var(--ease);
}
.reveal .panel-box:hover {
  box-shadow: var(--shadow-md);
}

.reveal .panel-box h3 {
  font-size: 0.88em;
  margin: 0 0 0.55em;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
}

.reveal .panel-box ul {
  margin: 0;
  padding-left: 1.15em;
  color: var(--muted);
}

/* ── Chips ── */
.reveal .chip {
  font-size: 0.45em;
  padding: 0.22em 0.55em;
  border-radius: var(--r-sm);
  font-weight: 500;
  display: inline-block;
  margin: 0.1em 0.1em 0.1em 0;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--muted);
}

/* ── Steps (booking) ── */
.reveal .steps {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0.3rem;
  margin: 0.75rem 0;
  flex-wrap: wrap;
}

.reveal .step {
  border: 1px solid var(--border-strong);
  border-radius: var(--r-md);
  padding: 0.75em 0.95em;
  font-size: 0.46em;
  font-weight: 500;
  background: var(--surface);
  min-width: 110px;
  color: var(--text);
  position: relative;
  transition: all var(--t-med) var(--ease);
  box-shadow: var(--shadow-sm);
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.3em;
}
.reveal .step:hover {
  border-color: var(--brand);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.reveal .step .step-num {
  display: inline-block;
  font-size: 0.75em;
  font-weight: 700;
  color: var(--brand);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  background: var(--brand-soft);
  padding: 0.15em 0.45em;
  border-radius: var(--r-sm);
}

.reveal .step-arrow {
  color: var(--dim);
  font-size: 1em;
  display: flex;
  align-items: center;
  font-weight: 300;
  transition: color var(--t-fast) var(--ease);
}
.reveal .steps:hover .step-arrow {
  color: var(--brand);
}

.reveal .note-bar,
.reveal .flow-banner {
  margin-top: 0.85em;
  padding: 0.55em 0.95em;
  font-size: 0.48em;
  font-weight: 400;
  color: var(--muted);
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--r-md);
  display: inline-block;
  box-shadow: var(--shadow-sm);
  letter-spacing: -0.005em;
}

.reveal .steps-client {
  margin-top: 1rem;
}

/* ── Website widget mockup ── */
.reveal .slide-content[data-section="Виджет"] .slide-inner {
  padding-top: 0;
}

.reveal .slide-content[data-section="Виджет"] h2 {
  font-size: 1.35em;
  line-height: 1.12;
  margin-bottom: 0.28em;
  max-width: 86%;
  margin-left: auto;
  margin-right: auto;
}

.reveal .slide-content[data-section="Виджет"] h2::after {
  margin-top: 0.3em;
}

.reveal .widget-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 0.7rem;
  align-items: stretch;
  max-width: 92%;
  margin: 0 auto;
  text-align: left;
}

.reveal .widget-real-screen {
  height: 285px;
  background: #ffffff;
}

.reveal .widget-real-screen img {
  object-fit: cover;
  object-position: center bottom;
}

.reveal .widget-preview {
  background:
    linear-gradient(180deg, rgba(15, 118, 110, 0.08) 0%, transparent 45%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.reveal .widget-browser-bar {
  display: flex;
  gap: 0.35rem;
  align-items: center;
  padding: 0.42rem 0.65rem;
  background: var(--text);
}

.reveal .widget-browser-bar span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #71717a;
}

.reveal .widget-browser-bar span:first-child {
  background: var(--brand);
}

.reveal .widget-form {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.45rem;
  padding: 0.75rem;
  font-size: 0.42em;
}

.reveal .widget-form div,
.reveal .widget-submit {
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: var(--surface);
  padding: 0.55em 0.65em;
  min-height: 48px;
}

.reveal .widget-form label {
  display: block;
  color: var(--muted);
  font-size: 0.8em;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.35em;
}

.reveal .widget-form strong {
  font-size: 1.08em;
  letter-spacing: -0.02em;
}

.reveal .widget-form .widget-submit {
  grid-column: 1 / -1;
  min-height: auto;
  background: var(--brand);
  border-color: var(--brand);
  color: #fafafa;
  font-weight: 700;
  text-align: center;
  padding: 0.42em 0.65em;
}

.reveal .widget-copy {
  display: grid;
  grid-template-rows: auto auto;
  gap: 0.55rem;
  align-content: start;
}

.reveal .widget-copy .card {
  height: auto;
  min-height: 0;
  box-sizing: border-box;
  padding: 0.72em 0.8em;
}

.reveal .widget-copy .card h3 {
  font-size: 0.56em;
  margin-bottom: 0.28em;
}

.reveal .widget-copy .card p {
  font-size: 0.41em;
  line-height: 1.32;
}

/* ── Launch and summary ── */
.reveal .launch-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.65rem;
  max-width: 94%;
  margin: 0 auto;
  text-align: left;
}

.reveal .launch-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 0.9em 0.85em;
  box-shadow: var(--shadow-sm);
  min-height: 170px;
  position: relative;
}

.reveal .launch-item span {
  width: 2em;
  height: 2em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-soft);
  color: var(--brand);
  border-radius: var(--r-sm);
  font-size: 0.42em;
  font-weight: 700;
  margin-bottom: 0.8em;
  font-variant-numeric: tabular-nums;
}

.reveal .launch-item strong {
  display: block;
  font-size: 0.56em;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 0.4em;
}

.reveal .launch-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.42em;
  line-height: 1.45;
}

.reveal .summary-panel {
  max-width: 88%;
  margin: 0 auto;
  background:
    radial-gradient(ellipse 70% 70% at 50% 0%, rgba(15, 118, 110, 0.12), transparent 62%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-md);
  padding: 1.2em;
  text-align: center;
}

.reveal .summary-main strong {
  display: block;
  max-width: 820px;
  margin: 0 auto 0.4em;
  font-size: 0.8em;
  line-height: 1.22;
  letter-spacing: -0.03em;
}

.reveal .summary-main p {
  max-width: 760px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 0.54em;
  line-height: 1.55;
}

.reveal .summary-points {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.45rem;
  margin-top: 1rem;
}

.reveal .summary-points span {
  display: inline-flex;
  align-items: center;
  padding: 0.45em 0.8em;
  background: var(--brand-soft);
  border: 1px solid var(--brand-line);
  border-radius: var(--r-sm);
  color: var(--brand-strong);
  font-size: 0.42em;
  font-weight: 600;
}

/* ── Tech ── */
.reveal .tech-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.65rem;
  margin-top: 0.5rem;
}

.reveal .tech-tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  padding: 0.95rem 0.6rem 0.85rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.45em;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--t-med) var(--ease);
}
.reveal .tech-tile::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--brand);
  opacity: 0;
  transition: opacity var(--t-med) var(--ease);
}
.reveal .tech-tile:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
  border-color: var(--border-strong);
}
.reveal .tech-tile:hover::before {
  opacity: 1;
}

.reveal .tech-tile img {
  width: 42px;
  height: 42px;
  object-fit: contain;
  transition: transform var(--t-med) var(--ease);
}
.reveal .tech-tile:hover img {
  transform: scale(1.08);
}

.reveal .tech-tile strong {
  font-size: 0.46em;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.reveal .tech-tile span {
  font-size: 0.36em;
  color: var(--muted);
  text-align: center;
  line-height: 1.3;
}

.reveal .tech-note {
  margin-top: 0.9em;
  font-size: 0.5em;
  color: var(--brand);
  font-weight: 500;
  letter-spacing: -0.005em;
}

/* ── Timeline ── */
.reveal .timeline-visual {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 88%;
  margin: 0 auto;
  font-size: 0.54em;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

.reveal .timeline-item {
  display: flex;
  align-items: center;
  gap: 1em;
  padding: 0.7em 1.1em;
  border-bottom: 1px solid var(--border);
  font-weight: 400;
  transition: all var(--t-fast) var(--ease);
  position: relative;
}
.reveal .timeline-item:last-child {
  border-bottom: none;
}
.reveal .timeline-item:hover {
  background: var(--surface-2);
  padding-left: 1.5em;
}
.reveal .timeline-item:hover::before {
  opacity: 1;
}
.reveal .timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--brand);
  opacity: 0;
  transition: opacity var(--t-fast) var(--ease);
}

.reveal .timeline-item .ti-num {
  width: 1.8em;
  height: 1.8em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: var(--brand);
  background: var(--brand-soft);
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
  border-radius: var(--r-sm);
  font-size: 0.85em;
}

/* ── Misc ── */
.reveal .bullet-list {
  font-size: 0.6em;
  text-align: left;
  padding-left: 1.1em;
  margin: 0;
  color: var(--muted);
}

.reveal .bullet-list li {
  margin-bottom: 0.4em;
}

.reveal .payment-icons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.reveal .payment-icons img {
  width: 48px;
  height: auto;
  filter: grayscale(0.1);
  transition: filter var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}
.reveal .payment-icons img:hover {
  filter: grayscale(0);
  transform: translateY(-2px);
}

.reveal .payment-icons .payment-logo-assist {
  width: auto;
  height: 32px;
  max-width: 140px;
}

.reveal .small { font-size: 0.85em; }
.reveal .center { text-align: center; }
.reveal .muted { color: var(--muted); }

/* ── Slide footer (chrome) ── */
.slide-chrome {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  font-size: 11px;
  color: var(--muted);
  background: linear-gradient(180deg, transparent 0%, rgba(246, 246, 247, 0.94) 60%);
  z-index: 30;
  pointer-events: none;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  font-family: "Inter", system-ui, sans-serif;
  transition: opacity var(--t-med) var(--ease), transform var(--t-med) var(--ease);
}
.chrome-left,
.chrome-right {
  display: flex;
  align-items: center;
  gap: 12px;
  text-transform: uppercase;
  font-weight: 500;
}
.chrome-logo {
  height: 14px;
  width: auto;
  opacity: 0.78;
  filter: none;
  transition: all var(--t-fast) var(--ease);
}
.chrome-logo:hover {
  opacity: 1;
}
.chrome-section {
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--muted);
}
.chrome-section::before {
  content: "·";
  margin-right: 12px;
  color: var(--brand);
  font-weight: 700;
  font-size: 14px;
}
.chrome-counter {
  font-weight: 500;
  color: var(--muted);
  font-size: 10.5px;
  letter-spacing: 0.08em;
}
.chrome-hint {
  font-size: 9.5px;
  color: var(--dim);
  letter-spacing: 0.1em;
  font-weight: 500;
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--surface);
  opacity: 0.7;
  transition: all var(--t-fast) var(--ease);
}
.chrome-hint:hover {
  opacity: 1;
  color: var(--brand);
  border-color: var(--brand-line);
}
.chrome-counter strong {
  color: var(--text);
  font-weight: 600;
}

.on-title-slide .slide-chrome {
  opacity: 0;
  transform: translateY(8px);
}

/* ── Fragment stagger animations ── */
.reveal .fragment {
  transition: opacity var(--t-med) var(--ease),
              transform var(--t-med) var(--ease) !important;
}

/* default: gentle fade + lift */
.reveal [data-fragment-index].fragment {
  opacity: 0;
  transform: translateY(10px);
}
.reveal [data-fragment-index].fragment.visible {
  opacity: 1;
  transform: none;
}

/* delays via data-fragment-index */
.reveal [data-fragment-index="0"].visible { transition-delay: 0ms; }
.reveal [data-fragment-index="1"].visible { transition-delay: 70ms; }
.reveal [data-fragment-index="2"].visible { transition-delay: 140ms; }
.reveal [data-fragment-index="3"].visible { transition-delay: 210ms; }
.reveal [data-fragment-index="4"].visible { transition-delay: 280ms; }
.reveal [data-fragment-index="5"].visible { transition-delay: 350ms; }
.reveal [data-fragment-index="6"].visible { transition-delay: 420ms; }
.reveal [data-fragment-index="7"].visible { transition-delay: 490ms; }
.reveal [data-fragment-index="8"].visible { transition-delay: 560ms; }

/* optional: scale-in for big elements (used sparingly) */
.reveal .fragment.scale-in {
  transform: scale(0.96);
}
.reveal .fragment.scale-in.visible {
  transform: scale(1);
}

/* Client-facing deck: each slide should read as a complete page immediately. */
.reveal .fragment,
.reveal [data-fragment-index].fragment,
.reveal [data-fragment-index].fragment.visible {
  opacity: 1 !important;
  visibility: visible !important;
  transform: none !important;
  transition-delay: 0ms !important;
}

/* ── Slide enter (light) ── */
.reveal .slides > section {
  transition: opacity var(--t-slow) var(--ease) !important;
}

/* ── Focus / motion-reduce ── */
.reveal :focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

@media (prefers-reduced-motion: reduce) {
  .reveal *,
  .reveal *::before,
  .reveal *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal [data-fragment-index].fragment {
    opacity: 1;
    transform: none;
  }
}

/* ── Small screens (defensive) ── */
@media (max-width: 640px) {
  .reveal .cards.three,
  .reveal .role-cards,
  .reveal .module-grid,
  .reveal .value-grid,
  .reveal .widget-layout,
  .reveal .launch-grid {
    grid-template-columns: 1fr;
  }
  .reveal .solution-flow {
    grid-template-columns: 1fr;
  }
  .reveal .solution-line {
    width: 1px;
    height: 24px;
    justify-self: center;
    background: linear-gradient(180deg, var(--border-strong), var(--brand));
  }
  .reveal .solution-line::after {
    right: -3px;
    top: auto;
    bottom: -3px;
  }
  .reveal .feature-grid,
  .reveal .tech-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .reveal .widget-form {
    grid-template-columns: 1fr;
  }
  .reveal .seq-diagram {
    flex-wrap: wrap;
  }
  .reveal .payment-layout {
    grid-template-columns: 1fr;
  }
}