:root {
  --navy: #003070;
  --deep: #071a33;
  --cyan: #0090d0;
  --aqua: #00a6a6;
  --violet: #5b5fc7;
  --amber: #c88400;
  --rose: #c94f6d;
  --green: #2f8f5b;
  --ink: #152238;
  --muted: #5c6a7c;
  --paper: #fbfaf7;
  --line: #dfe8ef;
  --soft: #eef8fc;
  --card: rgba(255, 255, 255, 0.88);
  --domain: var(--cyan);
  --domain-soft: rgba(0, 144, 208, 0.12);
  --shadow: 0 32px 80px rgba(0, 24, 56, 0.28);
  --title-font: "Playfair Display", "Cormorant Garamond", Georgia, Garamond, serif;
  --body-font: Inter, "Source Sans 3", Lato, Arial, Helvetica, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  width: 100%;
  height: 100%;
  margin: 0;
}

body {
  font-family: var(--body-font);
  color: var(--ink);
  background:
    radial-gradient(circle at 16% 10%, rgba(0, 144, 208, 0.32), transparent 28%),
    radial-gradient(circle at 86% 82%, rgba(91, 95, 199, 0.22), transparent 30%),
    linear-gradient(135deg, #061326 0%, #0b2445 54%, #081827 100%);
  overflow: hidden;
}

button { font: inherit; }

.deck-shell {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: grid;
  place-items: center;
  padding: clamp(12px, 2vw, 28px);
}

.progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 4px;
  background: rgba(0, 48, 112, 0.08);
  z-index: 10;
}

.progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--aqua), var(--violet));
  transition: width 240ms ease;
}

.deck {
  width: min(95vw, calc(94vh * 16 / 9));
  aspect-ratio: 16 / 9;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.26);
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow);
  border-radius: 14px;
}

.slide {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: clamp(8px, 1vw, 14px);
  padding: clamp(30px, 3.4vw, 54px);
  opacity: 0;
  transform: translateX(22px);
  pointer-events: none;
  transition: opacity 220ms ease, transform 220ms ease;
  background:
    linear-gradient(90deg, var(--domain-soft), transparent 26%),
    radial-gradient(circle at 94% 15%, var(--domain-soft), transparent 28%),
    #fffdfa;
}

.slide.active {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

.slide::before {
  content: "";
  position: absolute;
  left: clamp(30px, 3.4vw, 54px);
  right: clamp(30px, 3.4vw, 54px);
  top: clamp(24px, 2.6vw, 42px);
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--domain), rgba(0, 144, 208, 0));
}

.slide::marker { color: var(--domain); }

.slide.memory { --domain: var(--cyan); --domain-soft: rgba(0, 144, 208, 0.13); }
.slide.attention { --domain: var(--amber); --domain-soft: rgba(200, 132, 0, 0.13); }
.slide.language { --domain: var(--violet); --domain-soft: rgba(91, 95, 199, 0.13); }
.slide.space { --domain: var(--aqua); --domain-soft: rgba(0, 166, 166, 0.13); }
.slide.praxis { --domain: var(--green); --domain-soft: rgba(47, 143, 91, 0.13); }
.slide.executive { --domain: #1f6feb; --domain-soft: rgba(31, 111, 235, 0.13); }
.slide.behavior { --domain: var(--rose); --domain-soft: rgba(201, 79, 109, 0.13); }
.slide.clinical { --domain: var(--cyan); --domain-soft: rgba(0, 144, 208, 0.15); }

.slide::after {
  content: "";
  position: absolute;
  right: 6%;
  top: 9%;
  width: 24%;
  aspect-ratio: 1;
  border: 1px solid rgba(0, 144, 208, 0.18);
  border-radius: 50%;
  background:
    linear-gradient(120deg, transparent 48%, rgba(0, 144, 208, 0.14) 49%, transparent 51%),
    linear-gradient(30deg, transparent 48%, rgba(0, 48, 112, 0.10) 49%, transparent 51%);
  opacity: 0.26;
  pointer-events: none;
}

.slide-number-mark {
  position: absolute;
  right: clamp(22px, 3vw, 42px);
  top: clamp(20px, 2.8vw, 40px);
  z-index: 0;
  color: color-mix(in srgb, var(--domain) 13%, transparent);
  font-family: var(--title-font);
  font-size: clamp(80px, 10vw, 150px);
  font-weight: 700;
  line-height: 0.8;
  pointer-events: none;
}

.slide-visual {
  position: absolute;
  right: clamp(30px, 5vw, 72px);
  top: clamp(62px, 8vw, 104px);
  width: clamp(140px, 18vw, 250px);
  aspect-ratio: 1;
  opacity: 0.28;
  pointer-events: none;
  z-index: 0;
}

.cover-visual {
  right: clamp(48px, 7vw, 110px);
  top: clamp(46px, 7vw, 86px);
  width: clamp(260px, 31vw, 430px);
  opacity: 0.85;
}

.node,
.path,
.glyph {
  position: absolute;
  display: block;
}

.node {
  width: 13%;
  aspect-ratio: 1;
  border: 2px solid color-mix(in srgb, var(--domain) 48%, transparent);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.82);
  animation: nodePulse 4.8s ease-in-out infinite;
}

.n1 { left: 12%; top: 20%; }
.n2 { right: 18%; top: 16%; animation-delay: 0.7s; }
.n3 { left: 24%; bottom: 18%; animation-delay: 1.3s; }
.n4 { right: 12%; bottom: 25%; animation-delay: 2s; }

.path {
  height: 2px;
  transform-origin: left center;
  background: linear-gradient(90deg, color-mix(in srgb, var(--domain) 62%, transparent), rgba(0, 48, 112, 0.05));
  animation: signal 5.6s ease-in-out infinite;
}

.p1 { left: 22%; top: 28%; width: 56%; transform: rotate(-4deg); }
.p2 { left: 31%; top: 39%; width: 43%; transform: rotate(58deg); animation-delay: 1s; }
.p3 { left: 31%; bottom: 30%; width: 52%; transform: rotate(-17deg); animation-delay: 1.8s; }

.glyph {
  right: 20%;
  bottom: 15%;
  width: 34%;
  aspect-ratio: 1;
  border: 1px solid rgba(0, 48, 112, 0.16);
  border-radius: 50%;
  background:
    linear-gradient(90deg, transparent 46%, color-mix(in srgb, var(--domain) 26%, transparent) 47%, transparent 49%),
    linear-gradient(0deg, transparent 46%, rgba(0, 48, 112, 0.16) 47%, transparent 49%);
  animation: slowTurn 18s linear infinite;
}

.memory .glyph { border-radius: 35% 65% 45% 55%; }
.attention .glyph {
  clip-path: polygon(50% 0, 63% 36%, 100% 50%, 63% 64%, 50% 100%, 37% 64%, 0 50%, 37% 36%);
  border-radius: 0;
}
.language .glyph {
  border-radius: 8px;
  background: linear-gradient(90deg, rgba(0, 144, 208, 0.22) 18%, transparent 18% 32%, rgba(0, 48, 112, 0.13) 32% 46%, transparent 46%);
}
.space .glyph { border-radius: 8px; transform: rotate(12deg); }
.praxis .glyph { border-radius: 50% 50% 18% 18%; }
.executive .glyph {
  border-radius: 8px;
  background: linear-gradient(90deg, rgba(0, 144, 208, 0.22) 0 30%, transparent 30% 36%, rgba(0, 48, 112, 0.13) 36% 66%, transparent 66% 72%, rgba(0, 144, 208, 0.18) 72%);
}
.behavior .glyph {
  background:
    radial-gradient(circle at 34% 34%, rgba(0, 144, 208, 0.28), transparent 24%),
    radial-gradient(circle at 66% 66%, rgba(0, 48, 112, 0.18), transparent 27%);
}
.clinical .glyph {
  border-radius: 8px;
  background:
    linear-gradient(90deg, transparent 42%, rgba(0, 144, 208, 0.25) 42% 58%, transparent 58%),
    linear-gradient(0deg, transparent 42%, rgba(0, 48, 112, 0.16) 42% 58%, transparent 58%);
}

.slide-header {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 10px;
  max-width: 80%;
}

.eyebrow {
  justify-self: start;
  padding: 5px 10px;
  border: 1px solid color-mix(in srgb, var(--domain) 38%, transparent);
  border-radius: 999px;
  color: var(--domain);
  background: rgba(255, 255, 255, 0.68);
  font-size: clamp(10px, 0.95vw, 13px);
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1, h2, h3 {
  margin: 0;
  color: var(--navy);
  font-family: var(--title-font);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: 0;
}

h1 { font-size: clamp(34px, 5vw, 70px); }
h2 { font-size: clamp(28px, 3.45vw, 50px); }
h3 {
  font-size: clamp(18px, 2vw, 28px);
  color: #254160;
}

.slide-body {
  position: relative;
  z-index: 1;
  min-height: 0;
  align-self: stretch;
  font-size: clamp(15px, 1.32vw, 22px);
  line-height: 1.36;
  color: var(--ink);
}

.body-layout {
  height: 100%;
  display: block;
}

.body-content {
  min-width: 0;
  min-height: 0;
}

.slide-body.long {
  font-size: clamp(12px, 0.98vw, 16px);
  overflow: auto;
  padding-right: 8px;
}

.slide-body.medium {
  font-size: clamp(14px, 1.16vw, 19px);
}

.slide-body::-webkit-scrollbar { width: 8px; }
.slide-body::-webkit-scrollbar-thumb {
  background: rgba(0, 144, 208, 0.35);
  border-radius: 999px;
}

.content-grid {
  display: block;
}

.content-grid.single {
  display: block;
}

.lead-list,
.card-list,
.plain-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.lead-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: clamp(16px, 2vw, 28px);
  row-gap: 0.2em;
}

.content-grid.single .lead-list {
  grid-template-columns: 1fr;
}

.content-grid.compact .lead-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.lead-list > li,
.plain-list > li {
  position: relative;
  margin: 0 0 0.46em;
  padding-left: 1.1em;
}

.lead-list > li::before,
.plain-list > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.42em;
  height: 0.42em;
  border-radius: 50%;
  background: var(--domain);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--domain) 12%, transparent);
}

.card-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(8px, 0.9vw, 14px);
}

.info-card {
  border: 1px solid color-mix(in srgb, var(--domain) 22%, var(--line));
  border-left: 5px solid var(--domain);
  border-radius: 8px;
  padding: clamp(8px, 0.95vw, 14px);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.95), color-mix(in srgb, var(--domain) 6%, white)),
    var(--card);
  box-shadow: 0 10px 24px rgba(0, 48, 112, 0.06);
}

.info-card strong {
  display: block;
  margin-bottom: 0.32em;
  color: var(--navy);
  font-size: 1.02em;
}

.info-card ul {
  margin: 0.2em 0 0;
  padding-left: 1.05em;
}

.info-card li { margin: 0.18em 0; }

.callback {
  margin-top: 0.55em;
  padding: clamp(8px, 0.95vw, 14px);
  border: 1px solid color-mix(in srgb, var(--domain) 52%, transparent);
  border-left: 5px solid var(--domain);
  border-radius: 8px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--domain) 12%, white), #ffffff 70%),
    var(--soft);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.65);
}

.dense .body-layout {
  display: block;
}

.callback-title {
  display: flex;
  align-items: center;
  gap: 0.45em;
  margin-bottom: 0.35em;
  color: var(--navy);
  font-weight: 800;
}

.callback-title::before {
  content: ">";
  display: inline-grid;
  place-items: center;
  width: 1.45em;
  height: 1.45em;
  border-radius: 50%;
  color: white;
  background: var(--domain);
}

.callback-text {
  font-weight: 600;
  color: #20374f;
}

.brand-footer {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 18px;
  min-height: 32px;
  color: var(--muted);
  font-size: clamp(10px, 0.78vw, 12px);
}

.cover {
  grid-template-rows: 1fr auto;
  padding: clamp(44px, 5.1vw, 78px);
  background:
    radial-gradient(circle at 80% 18%, rgba(0, 144, 208, 0.36), transparent 31%),
    radial-gradient(circle at 18% 85%, rgba(91, 95, 199, 0.24), transparent 32%),
    linear-gradient(135deg, #061326 0%, #08234a 58%, #fffdfa 58.2%, #fffdfa 100%);
}

.cover::before {
  top: auto;
  bottom: 22%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
}

.cover .slide-header {
  max-width: 68%;
  align-self: center;
}

.cover .eyebrow {
  color: white;
  border-color: rgba(255, 255, 255, 0.34);
  background: rgba(255, 255, 255, 0.12);
}

.cover h1 {
  color: white;
  text-shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
}

.cover h1 { margin-top: 0.16em; }

.cover .slide-body {
  max-width: 100%;
  align-self: start;
  color: var(--ink);
}

.cover .body-content,
.cover .body-content strong,
.cover .body-content em {
  color: white;
}

.cover .lead-list > li::before,
.cover .plain-list > li::before {
  background: white;
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.16);
}

.cover .slide-number-mark {
  color: rgba(255, 255, 255, 0.08);
  right: 6%;
  top: 7%;
  font-size: clamp(150px, 18vw, 260px);
}

.cover-layout {
  display: block;
}

.signature-line {
  position: absolute;
  right: 13%;
  top: 25%;
  width: 27%;
  height: 18%;
  border-bottom: 3px solid rgba(0, 144, 208, 0.45);
  border-radius: 50%;
  transform: rotate(-8deg);
  animation: drawLine 2.8s ease-in-out both;
}

.controls {
  position: fixed;
  left: 50%;
  bottom: clamp(10px, 1.8vh, 18px);
  transform: translateX(-50%);
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  box-shadow: 0 10px 28px rgba(0, 48, 112, 0.12);
}

.nav-btn,
.icon-btn {
  min-width: 44px;
  min-height: 34px;
  border: 1px solid rgba(0, 48, 112, 0.16);
  border-radius: 999px;
  color: var(--navy);
  background: white;
  cursor: pointer;
}

.nav-btn {
  padding: 0 16px;
  font-weight: 700;
}

.nav-btn.primary {
  color: white;
  border-color: var(--navy);
  background: var(--navy);
}

.nav-btn:disabled {
  opacity: 0.42;
  cursor: default;
}

.counter {
  min-width: 76px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  font-weight: 800;
}

strong { color: var(--navy); }
em { color: #28455f; }

@keyframes nodePulse {
  0%, 100% { transform: scale(1); border-color: rgba(0, 144, 208, 0.32); }
  50% { transform: scale(1.15); border-color: rgba(0, 144, 208, 0.72); }
}

@keyframes signal {
  0%, 100% { opacity: 0.26; }
  45%, 60% { opacity: 0.78; }
}

@keyframes slowTurn {
  from { rotate: 0deg; }
  to { rotate: 360deg; }
}

@keyframes drawLine {
  from { clip-path: inset(0 100% 0 0); opacity: 0; }
  to { clip-path: inset(0 0 0 0); opacity: 1; }
}

@media (max-width: 780px) {
  body { overflow: auto; }
  .deck-shell {
    min-height: 100vh;
    height: auto;
    padding-bottom: 78px;
  }
  .deck {
    width: 100%;
    min-height: 72vh;
    aspect-ratio: auto;
  }
  .slide { padding: 28px; }
  .slide-header,
  .cover .slide-header,
  .cover .slide-body { max-width: 100%; }
  .content-grid,
  .card-list { grid-template-columns: 1fr; }
  .lead-list,
  .content-grid.compact .lead-list { grid-template-columns: 1fr; }
  .body-layout,
  .cover-layout,
  .dense .body-layout { grid-template-columns: 1fr; }
  .slide-visual { opacity: 0.28; right: 18px; top: 70px; }
  .signature-line { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .slide,
  .node,
  .path,
  .glyph,
  .signature-line {
    animation: none;
    transition: none;
  }
}