:root {
  --black: #000;
  --panel: #0b0b0b;
  --white: #fff;
  --muted: #a0a0a0;
  --line: #292929;
  --blue: #6aa9ff;
  --font: "Google Sans Flex", "Avenir Next", "Segoe UI", Arial, sans-serif;
  --ease: cubic-bezier(.2,.8,.2,1);
  --stage-x: clamp(2.25rem, 5vw, 7rem);
  --stage-y: clamp(2.6rem, 6vh, 5.5rem);

  /* Unified typography scale — strictly even pixel sizes */
  --fs-08: 0.75rem;  /* 12px */
  --fs-10: 0.875rem; /* 14px */
  --fs-12: 1rem;     /* 16px */
  --fs-14: 1.125rem; /* 18px */
  --fs-16: 1.25rem;  /* 20px */
  --fs-18: 1.375rem; /* 22px */
  --fs-24: 2.125rem; /* 34px */
  --fs-28: 2.5rem;   /* 40px */
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; }
html { background: var(--black); color-scheme: dark; font-size: 16px; }

@media (max-height: 640px) {
  html { font-size: clamp(6px, 2.5vh, 16px); }
}

@media (min-width: 2560px) and (min-height: 1100px) {
  html { font-size: clamp(24px, min(1.1vw, 1.85vh), 40px); }
}

@media (min-width: 5120px) and (min-height: 1800px) {
  html { font-size: clamp(44px, min(1vw, 1.75vh), 76px); }
}

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font);
  font-size: var(--fs-14);
  line-height: 1.6;
  letter-spacing: normal;
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
}

button, a { font: inherit; color: inherit; letter-spacing: normal; }
h1, h2, h3, p, ol, dl, figure, blockquote { margin: 0; letter-spacing: normal; }
h1, h2, h3, strong, b { text-wrap: balance; }

/* ==========================================================================
   1. UNIFIED TYPOGRAPHY & BUTTON SYSTEM (SHARED ACROSS ALL SLIDES)
   ========================================================================== */

/* Primary Display & Section Titles (Slide 1 H1, Slide 2 Brand & Detail Heading, Slide 3 Title, Slide 5 Idea Statement) */
h1,
#slide-1 h1,
#slide-2 .video-card-brand,
#slide-2 .intro-detail-heading,
#slide-3 .lb-title,
#slide-5 .idea-statement,
.orientation-gate .orientation-title {
  color: var(--white);
  font-family: var(--font);
  font-size: var(--fs-24); /* 34px (one step smaller than 40px, even pixel) */
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: normal;
}

/* Secondary & Tertiary Headings */
h2 {
  color: var(--white);
  font-family: var(--font);
  font-size: var(--fs-24); /* 34px */
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: normal;
}

h3 {
  color: var(--white);
  font-family: var(--font);
  font-size: var(--fs-18); /* 22px */
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: normal;
}

/* Unified Subtitles / Meta / Eyebrows across all slides (14px) */
.eyebrow,
#slide-1 .hero-meta,
#slide-2 .video-card-sub,
#slide-2 .intro-detail-meta,
#slide-3 .lb-subtitle {
  color: var(--muted);
  font-family: var(--font);
  font-size: var(--fs-10); /* 14px */
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: normal;
}

/* Unified Narrative Body Copy (Slide 2 Detail Text & Slide 4 Story Text) */
.lead,
#slide-2 .intro-detail-text,
#slide-4 .lb-story-text {
  color: var(--white);
  font-family: var(--font);
  font-size: var(--fs-18); /* 22px */
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: normal;
}

/* Unified Copyright / Fine Print */
#slide-2 .video-card-copyright,
#slide-2 .intro-detail-copyright,
#slide-5 .sound-card-disclaimer,
#slide-6 .foote-concept-disclaimer {
  color: #666666;
  font-family: var(--font);
  font-size: var(--fs-08); /* 12px */
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: normal;
}

/* Unified Action Buttons across all slides */
#slide-1 .start-button,
#slide-2 .video-card-action,
#slide-2 .intro-back-button,
#slide-3 .lb-explore-button,
#slide-5 .process-start-button,
#slide-6 .promo-watch-button,
#slide-7 .s7-research-btn {
  display: inline-grid;
  place-items: center;
  min-width: 2.5rem;
  height: 2.5rem;
  padding: 0 1.125rem;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 0;
  color: #a8a8a8;
  font-family: var(--font);
  font-size: var(--fs-08); /* 12px */
  font-weight: 700;
  line-height: 1;
  letter-spacing: normal;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  transition: color 140ms ease, background 140ms ease, border-color 140ms ease, opacity 1.6s cubic-bezier(0.4, 0, 0.2, 1);
}

#slide-1 .start-button:hover,
#slide-1 .start-button:focus-visible,
#slide-2 .video-card-action:hover,
#slide-2 .video-square:focus-visible .video-card-action,
#slide-2 .intro-back-button:hover,
#slide-2 .intro-back-button:focus-visible,
#slide-3 .lb-explore-button:hover,
#slide-3 .lb-explore-button:focus-visible,
#slide-5 .process-start-button:hover,
#slide-5 .process-start-button:focus-visible,
#slide-6 .promo-watch-button:hover,
#slide-6 .promo-watch-button:focus-visible,
#slide-7 .s7-research-btn:hover,
#slide-7 .s7-research-btn:focus-visible {
  color: var(--white);
  background: #171717;
  border-color: transparent;
  outline: 1px solid #4b4b4b;
  outline-offset: 0;
}

/* Unified Text-Only Source Link (Slide 4) */
.source-link,
#slide-4 .lb-source-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0 0 0.2rem;
  width: fit-content;
  background: transparent;
  border: 0;
  border-bottom: 1px solid transparent;
  color: #a8a8a8;
  font-family: var(--font);
  font-size: var(--fs-08); /* 12px */
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: normal;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  user-select: none;
  transition: color 140ms ease, border-color 140ms ease;
}

.source-link:hover,
.source-link:focus-visible,
#slide-4 .lb-source-link:hover,
#slide-4 .lb-source-link:focus-visible {
  color: var(--white);
  background: transparent;
  border-bottom-color: var(--white);
  outline: none;
}

em { font-style: normal; color: var(--muted); font-weight: 350; }
.measurement-note { color: var(--muted); font-size: var(--fs-12); line-height: 1.6; letter-spacing: normal; max-width: 82ch; }
.speaker-note { display: none; }

@media (max-width: 980px) {
  h1,
  #slide-1 h1,
  #slide-2 .video-card-brand,
  #slide-2 .intro-detail-heading,
  #slide-3 .lb-title,
  #slide-5 .idea-statement,
  .orientation-gate .orientation-title {
    font-size: var(--fs-24); /* 34px */
  }
}

/* ==========================================================================
   2. CORE STAGE, SHELL, CONTROLS & PANELS
   ========================================================================== */

.presentation { position: fixed; inset: 0; background: #000; }
.slide { position: absolute; inset: 0; display: grid; opacity: 0; visibility: hidden; pointer-events: none; transition: opacity 760ms cubic-bezier(0.4, 0, 0.2, 1), visibility 0s 760ms; overflow: hidden; }
.slide.is-active { opacity: 1; visibility: visible; pointer-events: auto; transition: opacity 860ms cubic-bezier(0.4, 0, 0.2, 1) 140ms, visibility 0s 0s; z-index: 2; }
.slide-inner { width: 100%; height: 100%; min-height: 0; padding: var(--stage-y) var(--stage-x) calc(var(--stage-y) + 2.1rem); position: relative; }
.slide-inner::before { content: ""; position: absolute; inset: 0; z-index: -2; pointer-events: none; background: radial-gradient(circle at 75% 25%, rgba(255,255,255,.045), transparent 34%); }

.split-layout { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); align-items: center; gap: clamp(2rem, 5vw, 6rem); }
.case-copy { display: grid; align-content: center; gap: clamp(1rem, 2.3vh, 2rem); min-width: 0; }
.case-copy h2 { max-width: 24ch; }
.media-frame { min-width: 0; position: relative; height: min(66vh, 43vw); overflow: hidden; background: #000; border: 1px solid #242424; }
.media-frame img { width: 100%; height: 100%; display: block; object-fit: cover; filter: saturate(.9) contrast(1.04); }
.media-frame figcaption { position: absolute; left: 1rem; bottom: 1rem; padding: .45rem .65rem; background: rgba(0,0,0,.72); color: #c8c8c8; font-size: var(--fs-10); letter-spacing: normal; backdrop-filter: blur(10px); }
.media-frame::after { content: "Bu içerik telif hakkı sebebiyle görüntülenememektedir."; position: absolute; inset: 0; display: grid; place-items: center; padding: 1.5rem; text-align: center; z-index: -1; background: #000; color: #fff; font-size: var(--fs-14); letter-spacing: normal; }
.media-fallback { position: absolute; inset: 0; z-index: 6; display: none; place-items: center; padding: 1.5rem; text-align: center; background: #000; color: #fff; font-size: var(--fs-14); line-height: 1.5; letter-spacing: normal; }
.has-media-error .media-fallback { display: grid; }
.has-media-error video, .has-media-error img, .has-media-error .video-square-shade { visibility: hidden; }

.controls { position: fixed; z-index: 30; left: var(--stage-x); right: var(--stage-x); bottom: clamp(.7rem, 1.8vh, 1.35rem); display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1rem; pointer-events: none; }
.control-group { display: flex; align-items: center; gap: .38rem; pointer-events: auto; }
.control-group:last-child { justify-self: end; }
.icon-button, .text-button, .counter-button { border: 0; background: transparent; cursor: pointer; border-radius: 0; min-width: 2rem; height: 2rem; display: inline-grid; place-items: center; color: #a8a8a8; font-size: var(--fs-08); letter-spacing: normal; transition: color 140ms ease, background 140ms ease; }
.icon-button:hover, .text-button:hover, .counter-button:hover, button:focus-visible { color: white; background: #171717; outline: 1px solid #4b4b4b; outline-offset: 0; }
.triangle-icon { width: 0.625rem; height: 0.625rem; display: block; }
.text-button { padding: 0 .55rem; font-size: var(--fs-08); font-weight: 700; letter-spacing: normal; }
.counter-button { pointer-events: auto; display: flex; gap: .35rem; padding: 0 .65rem; font-size: var(--fs-08); letter-spacing: normal; font-variant-numeric: tabular-nums; }
.counter-button i { color: #555; font-style: normal; }
.progress-track { position: fixed; z-index: 31; left: 0; right: 0; bottom: 0; height: 2px; background: #181818; }
.progress-track span { display: block; width: calc(100% / 5); height: 100%; background: #fff; transition: width 260ms var(--ease); }

.orientation-gate { display: none; position: fixed; inset: 0; z-index: 100; background: #000; padding: 2rem; place-content: center; text-align: center; gap: 0.45rem; }
.orientation-gate svg { width: 5.5rem; margin: 0 auto 0.75rem; fill: none; stroke: #fff; stroke-width: 2; }
.orientation-gate p { max-width: 42rem; margin-inline: auto; color: var(--muted); font-size: var(--fs-14); font-weight: 400; line-height: 1.5; letter-spacing: normal; }
.orientation-gate .orientation-title { text-wrap: balance; }

.panel { position: fixed; inset: 0; z-index: 60; opacity: 0; visibility: hidden; transition: opacity 190ms ease, visibility 0s 190ms; }
.panel.is-open { opacity: 1; visibility: visible; transition-delay: 0s; }
.panel-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.76); backdrop-filter: blur(10px); }
.panel-sheet { position: absolute; top: 0; right: 0; height: 100%; width: min(38rem, 92vw); padding: clamp(1.6rem, 4vw, 4rem); background: #080808; border-left: 1px solid var(--line); overflow-y: auto; transform: translateX(2rem); transition: transform 240ms var(--ease); }
.panel.is-open .panel-sheet { transform: none; }
.panel-sheet.wide { width: min(78rem, 94vw); }
.panel-sheet.compact { width: min(31rem, 92vw); }
.panel-sheet header { display: flex; align-items: flex-start; justify-content: space-between; gap: 2rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--line); }
.panel-sheet header > div { display: grid; gap: .65rem; }
.close-button { border: 0; background: transparent; color: var(--muted); font-size: var(--fs-24); line-height: 1; cursor: pointer; }
.overview-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); margin-top: 1.5rem; border: 1px solid var(--line); }
.overview-card { border: 0; background: #0d0d0d; color: white; min-height: 6.5rem; padding: 1rem; text-align: center; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.overview-card:hover, .overview-card.is-current { background: #1b1b1b; }
.overview-card span { color: var(--white); font-size: var(--fs-14); letter-spacing: normal; font-variant-numeric: tabular-nums; }
.source-list { display: grid; }
.source-list a { display: grid; gap: .4rem; padding: 1.15rem .75rem; margin: 0 -.75rem; border-bottom: 1px solid var(--line); text-decoration: none; transition: background-color 140ms ease; }
.source-list b { font-size: var(--fs-14); line-height: 1.5; letter-spacing: normal; color: #ffffff; }
.source-list a:hover { background: #171717; }
.source-list a:hover b { color: #ffffff; }
.source-list a:hover span { color: #d1d1d1; }
.source-list span { color: var(--muted); font-size: var(--fs-12); line-height: 1.5; letter-spacing: normal; transition: color 140ms ease; }
.shortcut-list { display: grid; margin-top: 1.2rem; }
.shortcut-list div { display: grid; grid-template-columns: 8rem 1fr; gap: 1rem; padding: .9rem 0; border-bottom: 1px solid var(--line); font-size: var(--fs-14); letter-spacing: normal; }
.shortcut-list dt { color: white; font-weight: 600; }
.shortcut-list dd { color: var(--muted); margin: 0; }

.notes-drawer { position: fixed; z-index: 45; left: var(--stage-x); right: var(--stage-x); bottom: 3.5rem; padding: 1.2rem 1.35rem; background: rgba(13,13,13,.96); border: 1px solid #343434; display: flex; align-items: center; opacity: 0; visibility: hidden; transform: translateY(1rem); transition: all 180ms ease; }
.notes-drawer.is-open { opacity: 1; visibility: visible; transform: none; }
.notes-drawer #active-note { color: #d1d1d1; font-size: var(--fs-14); line-height: 1.6; letter-spacing: normal; max-width: 90ch; }
.no-script { position: fixed; z-index: 120; inset: 0; display: grid; place-items: center; background: black; color: white; font-size: var(--fs-14); letter-spacing: normal; }

/* ==========================================================================
   3. SLIDE 1 — OPENING HERO
   ========================================================================== */

#slide-1.slide {
  background: var(--black);
}

#slide-1 .slide-inner::before {
  display: none;
}

#slide-1 .hero-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

#slide-1 .hero-message {
  width: 100%;
  max-width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 0;
}

@keyframes hero-fade-in {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

#slide-1 .hero-meta {
  margin-bottom: 1.25rem;
  opacity: 0;
  animation: hero-fade-in 2.2s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards;
}

#slide-1 h1 {
  max-width: 100%;
  white-space: normal;
  text-align: center;
  opacity: 0;
  animation: hero-fade-in 2.2s cubic-bezier(0.4, 0, 0.2, 1) 0.2s forwards;
}

#slide-1 .start-button {
  margin-top: 1.85rem;
  opacity: 0;
  animation: hero-fade-in 1.6s cubic-bezier(0.4, 0, 0.2, 1) 2.4s forwards;
}

/* ==========================================================================
   4. SLIDE 2 — KINETIC INTRO, 21:9 CAROUSEL & CAMPAIGN DETAIL STAGE
   ========================================================================== */

#slide-2 .video-slide-layout {
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}

#slide-2 .kinetic-bg {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 280vmax;
  height: 280vmax;
  transform: translate(-50%, -50%) rotate(-25deg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(0.35rem, 0.9vh, 0.75rem);
  pointer-events: none;
  z-index: 0;
  user-select: none;
}

#slide-2 .kinetic-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1.4rem, 2.8vw, 3rem);
  white-space: nowrap;
  transform: translate3d(0, 0, 0);
  transition: transform 3.2s cubic-bezier(.22, .61, .36, 1);
  will-change: transform;
}

#slide-2 .kinetic-bg.is-moving .kinetic-row:nth-child(odd) {
  transform: translate3d(-9vw, 0, 0);
}

#slide-2 .kinetic-bg.is-moving .kinetic-row:nth-child(even) {
  transform: translate3d(9vw, 0, 0);
}

#slide-2 .kinetic-word {
  font-size: clamp(2rem, 3.8vw, 4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: normal;
  color: #ffffff;
  opacity: 0;
  transition:
    opacity 320ms cubic-bezier(0.4, 0, 0.2, 1),
    color 420ms cubic-bezier(0.4, 0, 0.2, 1);
}

#slide-2 .kinetic-word.is-typed {
  opacity: 1;
}

#slide-2 .kinetic-bg.is-flickering .kinetic-word.is-typed.tone-white {
  color: #ffffff;
  animation: kinetic-blink-white 540ms ease-in-out infinite alternate;
}

#slide-2 .kinetic-bg.is-flickering .kinetic-word.is-typed.tone-grey {
  color: #8a8a8a;
  animation: kinetic-blink-grey 620ms ease-in-out infinite alternate;
}

#slide-2 .kinetic-word.is-erased,
#slide-2 .kinetic-bg.is-hidden {
  opacity: 0 !important;
  animation: none !important;
}

@keyframes kinetic-blink-white {
  0% { color: #ffffff; opacity: 1; }
  100% { color: #7a7a7a; opacity: 0.72; }
}

@keyframes kinetic-blink-grey {
  0% { color: #8a8a8a; opacity: 0.76; }
  100% { color: #ffffff; opacity: 1; }
}

#slide-2 .intro-grid-stage {
  position: relative;
  z-index: 2;
  width: 100vw;
  margin-inline: calc(-1 * var(--stage-x));
  height: 100%;
  display: grid;
  place-items: center;
  overflow: hidden;
  touch-action: pan-y;
}

#slide-2 .intro-video-carousel {
  --card-w: min(56vw, 96vh, 52rem);
  --card-gap: clamp(1.8rem, 3.4vw, 3.6rem);
  position: relative;
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
}

#slide-2 .video-square {
  position: absolute;
  width: var(--card-w);
  display: grid;
  justify-items: center;
  gap: clamp(0.75rem, 1.8vh, 1.5rem);
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transition:
    transform 820ms cubic-bezier(0.22, 0.61, 0.36, 1),
    opacity 960ms cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform, opacity;
}

#slide-2 .video-square.is-no-transition {
  transition: none !important;
}

#slide-2 .video-square.is-revealed {
  opacity: 1;
  pointer-events: auto;
}

#slide-2 .video-square[data-slot="0"] {
  transform: translate3d(0, 0, 0) scale(1);
  z-index: 3;
}

#slide-2 .video-square[data-slot="-1"] {
  transform: translate3d(calc(-100% - var(--card-gap)), 0, 0) scale(0.95);
  z-index: 2;
}

#slide-2 .video-square[data-slot="1"] {
  transform: translate3d(calc(100% + var(--card-gap)), 0, 0) scale(0.95);
  z-index: 2;
}

#slide-2 .video-square[data-slot="-2"] {
  transform: translate3d(calc(-200% - var(--card-gap) * 2), 0, 0) scale(0.9);
  z-index: 1;
  opacity: 0 !important;
  pointer-events: none !important;
}

#slide-2 .video-square[data-slot="2"] {
  transform: translate3d(calc(200% + var(--card-gap) * 2), 0, 0) scale(0.9);
  z-index: 1;
  opacity: 0 !important;
  pointer-events: none !important;
}

#slide-2 .video-square-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 21 / 9;
  overflow: hidden;
  background: #000;
  border: 1px solid #242424;
  transition: border-color 320ms var(--ease);
}

#slide-2 .video-square-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#slide-2 .video-square-media video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
  transform: scale(1.06);
  filter: brightness(0.55) contrast(1.04);
  transition: filter 480ms var(--ease), transform 520ms var(--ease);
}

#slide-2 .video-square[data-video-index="1"] .video-square-media video {
  object-position: center bottom;
}

#slide-2 .video-square-shade {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.32);
  transition: opacity 480ms var(--ease);
  pointer-events: none;
}

#slide-2 .video-square[data-slot="0"] .video-square-media video,
#slide-2 .video-square:hover .video-square-media video,
#slide-2 .video-square:focus-visible .video-square-media video {
  filter: brightness(1) contrast(1.02);
  transform: scale(1.08);
}

#slide-2 .video-square[data-slot="0"] .video-square-shade,
#slide-2 .video-square:hover .video-square-shade,
#slide-2 .video-square:focus-visible .video-square-shade {
  opacity: 0;
}

#slide-2 .video-square:hover .video-square-frame,
#slide-2 .video-square:focus-visible .video-square-frame {
  border-color: #5a5a5a;
}

#slide-2 .video-card-caption {
  display: grid;
  justify-items: center;
  gap: clamp(0.2rem, 0.7vh, 0.45rem);
  opacity: 0;
  transform: translateY(0.35rem);
  pointer-events: none;
  transition:
    opacity 860ms cubic-bezier(0.4, 0, 0.2, 1),
    transform 860ms cubic-bezier(0.4, 0, 0.2, 1);
}

#slide-2 .video-square.is-caption-revealed[data-slot="0"] .video-card-caption {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

#slide-2 .video-card-copyright {
  margin-top: 0.1rem;
}

#slide-2 .video-card-action {
  margin-top: clamp(0.35rem, 1.2vh, 0.7rem);
}

#slide-2 .intro-detail-stage {
  position: relative;
  z-index: 3;
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  opacity: 0;
  transform: translateY(0.6rem);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}

#slide-2 .intro-detail-stage.is-visible {
  opacity: 1;
  transform: none;
}

#slide-2 .intro-detail-layout {
  width: min(100%, 74rem);
  display: grid;
  grid-template-columns: minmax(0, 1.28fr) minmax(0, 0.92fr);
  align-items: center;
  gap: clamp(1.5rem, 4vw, 5rem);
}

#slide-2 .intro-detail-video {
  width: min(100%, 110vh);
  max-height: 62vh;
  aspect-ratio: 16 / 9;
  background: #000;
  border: 1px solid #262626;
  overflow: hidden;
  position: relative;
}

#slide-2 .intro-detail-video video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
  background: #000;
}

#slide-2 .intro-detail-video[data-position="bottom"] video {
  object-position: center bottom;
}

#slide-2 .intro-detail-copy {
  display: grid;
  align-content: center;
  justify-items: start;
  gap: clamp(0.55rem, 1.6vh, 1.05rem);
}

#slide-2 .intro-detail-text {
  max-width: 42ch;
}

#slide-2 .intro-back-button {
  margin-top: 0.35rem;
}

/* ==========================================================================
   5. SLIDE 3 — LES BENJAMINS X APPLE VIDEO STAGE
   ========================================================================== */

#slide-3 .lb-hero-layout {
  display: grid;
  place-items: center;
  text-align: center;
}

#slide-3 .lb-center-stage {
  display: grid;
  justify-items: center;
  gap: clamp(0.65rem, 2vh, 1.75rem);
  width: 100%;
  max-width: 84rem;
  margin-inline: auto;
}

#slide-3 .lb-video-frame {
  width: min(82vw, 128vh, 76rem);
  aspect-ratio: 21 / 9;
  position: relative;
  overflow: hidden;
  background: #000;
  border: 1px solid #242424;
}

#slide-3 .lb-video-frame video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
}

#slide-3 .lb-caption {
  display: grid;
  justify-items: center;
  gap: clamp(0.25rem, 0.8vh, 0.45rem);
}

#slide-3 .lb-explore-button {
  margin-top: clamp(0.45rem, 1.5vh, 1.15rem);
}

/* ==========================================================================
   6. SLIDE 4 — FROM EARTH TO SKY STORY SPLIT
   ========================================================================== */

#slide-4 .lb-story-layout {
  padding-top: 0;
  padding-bottom: 0;
  padding-right: 0;
  display: grid;
  grid-template-columns: minmax(0, 0.76fr) minmax(0, 1.24fr);
  align-items: stretch;
  gap: clamp(2rem, 4.5vw, 5rem);
  height: 100%;
}

#slide-4 .lb-story-copy {
  align-self: center;
  display: grid;
  justify-items: start;
  gap: 1.25rem;
  max-width: 44ch;
  padding: var(--stage-y) 0 calc(var(--stage-y) + 2.5rem);
  opacity: 0;
  transform: translateY(0.5rem);
  transition:
    opacity 320ms ease,
    transform 320ms ease;
}

#slide-4.is-active .lb-story-copy {
  opacity: 1;
  transform: none;
  transition:
    opacity 2.2s cubic-bezier(0.22, 0.61, 0.36, 1) 0.95s,
    transform 2.2s cubic-bezier(0.22, 0.61, 0.36, 1) 0.95s;
}

#slide-4 .apple-logo {
  width: auto;
  height: 2.5rem;
  display: block;
  object-fit: contain;
  filter: invert(1);
}

#slide-4 .lb-source-link {
  margin-top: 0.25rem;
}

#slide-4 .lb-source-link .arrow-up-right {
  width: 0.72rem;
  height: 0.72rem;
  display: block;
  transform: translateY(-0.02rem);
}

#slide-4 .lb-story-media {
  height: 100%;
  min-height: 100%;
  width: 100%;
  border: 0;
  background: #000;
}

#slide-4 .lb-story-media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  object-position: center;
  filter: none;
}

/* ==========================================================================
   7. SLIDE 5 — IDEA BRIDGE, LIVE PROCESS CANVAS & TEAM MESSAGING
   ========================================================================== */

#slide-5 .idea-bridge-layout {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  height: 100%;
  min-height: 0;
}

#slide-5 .idea-stage {
  position: relative;
  display: grid;
  place-items: center;
  width: min(920px, 100%);
  min-height: 6rem;
}

#slide-5 .idea-stage[hidden] {
  display: none !important;
}

#slide-5 .idea-statement-first,
#slide-5 .idea-followup {
  grid-area: 1 / 1;
}

#slide-5 .idea-followup {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

#slide-5 .idea-statement {
  opacity: 0;
  transition: opacity 1.6s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

#slide-5 .idea-statement.is-visible {
  opacity: 1;
}

#slide-5 .process-start-button {
  position: absolute;
  top: calc(100% + 1.85rem);
  left: 50%;
  transform: translateX(-50%);
  background: transparent;
  opacity: 0;
  pointer-events: none;
  transition: opacity 1.6s cubic-bezier(0.4, 0, 0.2, 1), color 140ms ease, background 140ms ease, border-color 140ms ease;
}

#slide-5 .process-start-button.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* 50% / 50% Split Stage: Left Sound Design Card + Right Team Chat */
#slide-5 .team-chat-stage {
  width: 100%;
  height: 100%;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1.1rem, 2.2vw, 2.2rem);
  align-items: stretch;
  text-align: left;
  opacity: 0;
  transition: opacity 650ms cubic-bezier(0.22, 1, 0.36, 1);
}

#slide-5 .team-chat-stage[hidden] {
  display: none !important;
}

#slide-5 .team-chat-stage.is-visible {
  opacity: 1;
}

/* Left Column: Black-background "Daha fazla hoparlör, daha fazla eğlence." Design Card + Disclaimer */
#slide-5 .process-canvas-panel {
  width: 100%;
  height: 100%;
  max-height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  overflow: hidden;
  position: relative;
}

#slide-5 .sound-design-card {
  width: 100%;
  flex: 1;
  min-height: 0;
  background: var(--black);
  border: 1px dashed rgba(255, 255, 255, 0.26);
  border-radius: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  overflow: hidden;
  position: relative;
  transition: border-color 420ms ease, border-style 420ms ease;
}

#slide-5 .process-canvas-panel.is-step-8-plus .sound-design-card {
  border-style: solid;
  border-color: rgba(255, 255, 255, 0.22);
}

#slide-5 .process-canvas-panel[data-step="12"] .sound-design-card {
  border-color: rgba(255, 255, 255, 0.36);
}

#slide-5 .sound-card-copy {
  padding: clamp(1.4rem, 3.6vh, 2.5rem) clamp(1.2rem, 2.5vw, 2.6rem) 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: clamp(0.35rem, 0.8vh, 0.7rem);
  flex-shrink: 0;
  min-height: 0;
  z-index: 2;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 380ms cubic-bezier(0.4, 0, 0.2, 1), transform 380ms cubic-bezier(0.4, 0, 0.2, 1);
}

#slide-5 .sound-card-copy.is-changing {
  opacity: 0;
  transform: translateY(6px);
}

#slide-5 .sound-card-title {
  color: var(--white);
  font-family: var(--font);
  font-size: clamp(2.5rem, 4.2vw, 3.25rem); /* 40px to 52px */
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.015em;
  text-align: center;
  width: 100%;
  max-width: 32ch;
}

#slide-5 .sound-card-title.has-fixed-lines {
  font-size: clamp(2rem, 3vw, 2.875rem);
  width: 100%;
  max-width: 100%;
  white-space: pre;
  text-wrap: nowrap;
}

#slide-5 .sound-card-sub {
  color: rgba(255, 255, 255, 0.88);
  font-family: var(--font);
  font-size: var(--fs-16); /* 20px (one step up from 18px, even pixel) */
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: normal;
  text-align: center;
  white-space: pre-line;
  max-width: 42ch;
}

.nanosound-gradient {
  font-weight: 700;
  background: linear-gradient(
    90deg,
    #ff2d55 0%,
    #ff9500 15%,
    #ffcc00 30%,
    #34c759 45%,
    #00c7be 60%,
    #007aff 75%,
    #af52de 90%,
    #ff2d55 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  display: inline-block;
  animation: nanosoundShimmer 3s linear infinite;
  filter: drop-shadow(0 0 10px rgba(175, 82, 222, 0.45));
}

@keyframes nanosoundShimmer {
  0% {
    background-position: 0% center;
  }
  100% {
    background-position: 200% center;
  }
}

#slide-5 .sound-card-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 2.375rem;
  padding: 0 1.5rem;
  border: 0;
  border-radius: 9999px;
  background: #ffffff;
  color: #000000;
  font-family: var(--font);
  font-size: var(--fs-10); /* 14px */
  font-weight: 600;
  letter-spacing: normal;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(255, 255, 255, 0.22);
  margin-top: clamp(0.75rem, 1.8vh, 1.25rem); /* Pushed lower down as requested */
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
  transition:
    opacity 450ms ease,
    transform 450ms ease,
    background-color 650ms cubic-bezier(0.4, 0, 0.2, 1),
    color 650ms cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 650ms cubic-bezier(0.4, 0, 0.2, 1);
}

#slide-5 .sound-card-cta:active {
  opacity: 0.92;
}

/* Step 9: Önce buton gelir ama beyaz arka planlı ve koyu yazılı */
#slide-5 .process-canvas-panel.is-step-9-plus .sound-card-cta {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  background: #ffffff;
  color: #000000;
  box-shadow: 0 4px 16px rgba(255, 255, 255, 0.25);
}

/* Step 10+: Sonra buton maviye döner ve beyaz yazıya geçer */
#slide-5 .process-canvas-panel.is-step-10-plus .sound-card-cta {
  background: #0071e3;
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(0, 113, 227, 0.42);
}

#slide-5 .sound-card-note {
  font-family: var(--font);
  font-size: var(--fs-08); /* 12px */
  font-weight: 400;
  color: rgba(255, 255, 255, 0.42);
  letter-spacing: normal;
  text-align: center;
  margin-top: 0.45rem;
  opacity: 0;
  transform: translateY(4px);
  pointer-events: none;
  transition: opacity 400ms ease 120ms, transform 400ms ease 120ms;
}

/* Step 11+: Butonun altındaki küçük açıklama yazısı gelir */
#slide-5 .process-canvas-panel.is-step-11-plus .sound-card-note {
  opacity: 1;
  transform: translateY(0);
}

#slide-5 .sound-card-media {
  position: relative;
  flex: 1;
  min-height: 0;
  width: 100%;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  overflow: hidden;
  padding: 0;
  margin-top: clamp(0.25rem, 1vh, 0.75rem);
}

#slide-5 .sound-card-img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  display: block;
  object-fit: cover;
  object-position: center top;
  transform-origin: center bottom;
  opacity: 0.14;
  filter: grayscale(1) brightness(0.65);
  transform: none;
  transition:
    opacity 550ms cubic-bezier(0.22, 1, 0.36, 1),
    filter 550ms cubic-bezier(0.22, 1, 0.36, 1);
}

#slide-5 .process-canvas-panel.is-step-1-plus .sound-card-img {
  opacity: 0.28;
  filter: grayscale(1) brightness(0.75);
  transform: none;
}

#slide-5 .process-canvas-panel.is-step-4-plus .sound-card-img {
  opacity: 0.55;
  filter: grayscale(0.55) brightness(0.88);
  transform: none;
}

#slide-5 .process-canvas-panel.is-step-7-plus .sound-card-img {
  opacity: 0.8;
  filter: grayscale(0.25) brightness(0.95);
  transform: none;
}

#slide-5 .process-canvas-panel.is-step-8-plus .sound-card-img {
  opacity: 1;
  filter: none;
  transform: none;
}

#slide-5 .sound-card-disclaimer {
  flex-shrink: 0;
  padding-inline: 0.25rem;
}

/* Right Column: Half-Width Team Chat Window */
#slide-5 .team-chat-window {
  width: 100%;
  height: 100%;
  max-height: 100%;
  min-height: 0;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 0.95rem;
  background: rgba(10, 10, 10, 0.94);
  padding: clamp(0.95rem, 1.6vw, 1.35rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

#slide-5 .team-chat-window::-webkit-scrollbar {
  display: none;
  width: 0;
  height: 0;
}

#slide-5 .team-chat-feed {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

#slide-5 .team-msg {
  padding: 0.85rem 1.05rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 0.7rem;
  background: rgba(255, 255, 255, 0.03);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 420ms ease, transform 420ms ease;
}

#slide-5 .team-msg.is-visible {
  opacity: 1;
  transform: translateY(0);
}

#slide-5 .team-msg-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.32rem;
}

#slide-5 .team-msg-author {
  color: var(--white);
  font-size: var(--fs-14); /* 18px */
  font-weight: 700;
  letter-spacing: normal;
}

#slide-5 .team-msg-author[data-speaker="client"] {
  color: #fdba74;
}

#slide-5 .team-msg-author[data-speaker="account"] {
  color: #93c5fd;
}

#slide-5 .team-msg-author[data-speaker="strategist"] {
  color: #86efac;
}

#slide-5 .team-msg-author[data-speaker="creative"] {
  color: #c4b5fd;
}

#slide-5 .team-msg-author[data-speaker="art"] {
  color: #f9a8d4;
}

#slide-5 .team-msg-role {
  color: rgba(255, 255, 255, 0.62);
  font-size: var(--fs-10); /* 14px */
  font-style: italic;
  font-weight: 300;
  letter-spacing: normal;
}

#slide-5 .team-msg-body {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

#slide-5 .team-msg-paragraph {
  color: rgba(255, 255, 255, 0.94);
  font-size: var(--fs-14); /* 18px */
  line-height: 1.5;
  letter-spacing: normal;
  white-space: pre-line;
  animation: slide5MsgFadeIn 320ms ease;
}

@keyframes slide5MsgFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

#slide-5 .typing-dots {
  display: inline-flex;
  align-items: center;
  gap: 0.32rem;
  height: 1.4rem;
  padding: 0.1rem 0;
}

#slide-5 .typing-dots span {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.65);
  animation: slide5TypingDot 1.2s infinite ease-in-out;
}

#slide-5 .typing-dots span:nth-child(2) {
  animation-delay: 0.2s;
}

#slide-5 .typing-dots span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes slide5TypingDot {
  0%, 80%, 100% {
    opacity: 0.28;
    transform: scale(0.85);
  }
  40% {
    opacity: 1;
    transform: scale(1.1);
  }
}

/* ==========================================================================
   Slide 6: Muysl Footer Lockup & Promo Cinema Experience
   ========================================================================== */

#slide-6 .footer-slide-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  width: 100%;
  height: 100%;
  position: relative;
  user-select: none;
  overflow: visible;
}

#slide-6 .footer-main-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  width: 100%;
  height: 100%;
  opacity: 1;
  transform: none;
  transition: opacity 700ms cubic-bezier(0.4, 0, 0.2, 1);
}

#slide-6 .footer-main-stage.is-hidden {
  opacity: 0;
  transform: none;
  pointer-events: none;
}

#slide-6 .muysl-brand-lockup {
  display: inline-flex;
  align-items: baseline;
  justify-content: center;
  gap: clamp(0.25rem, 0.6vw, 0.5rem);
  overflow: visible;
  line-height: 1;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 700ms cubic-bezier(0.22, 1, 0.36, 1) 200ms, transform 700ms cubic-bezier(0.22, 1, 0.36, 1) 200ms;
}

#slide-6.is-active .muysl-brand-lockup {
  opacity: 1;
  transform: translateY(0);
}

#slide-6 .muysl-text {
  color: #ffffff;
  font-family: var(--font);
  font-size: clamp(2.35rem, 5.2vw, 4.25rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1;
  text-shadow: 0 4px 24px rgba(255, 255, 255, 0.12);
}

#slide-6 .muysl-footer-script {
  font-family: 'Alex Brush', 'Great Vibes', cursive;
  font-size: clamp(3.5rem, 7.8vw, 6.25rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: 0.02em;
  /* Generous padding so top loop of 'F', tail of 'r', and descenders NEVER clip */
  padding: 0.45em 0.35em 0.28em 0.15em;
  margin-top: -0.45em;
  margin-bottom: -0.28em;
  margin-left: 0;
  overflow: visible;
  display: inline-block;
  background: linear-gradient(
    135deg,
    #ffffff 0%,
    #f8fafc 18%,
    #f0f9ff 34%,
    #e0f2fe 50%,
    #bae6fd 66%,
    #7dd3fc 78%,
    #e0f2fe 88%,
    #ffffff 100%
  );
  background-size: 260% 260%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  animation: muyslCyanWhiteShimmer 6s ease-in-out infinite alternate;
  filter: none;
}

@keyframes muyslCyanWhiteShimmer {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 100% 50%;
  }
}

/* Tanıtımı İzle Butonu: Diğer slaytlardaki butonlar ile birebir aynı stil, aynı aralık ve gecikmeli fade-in */
#slide-6 .promo-watch-button {
  margin-top: clamp(1.2rem, 2vh, 1.45rem);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1) 1.2s,
    color 140ms ease,
    background 140ms ease,
    border-color 140ms ease;
}

#slide-6.is-active .promo-watch-button {
  opacity: 1;
  pointer-events: auto;
}

/* ==========================================================================
   Slide 6: Cinematic Promo Statement Sequence
   ========================================================================== */

#slide-6 .promo-cinema-stage {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 600ms cubic-bezier(0.4, 0, 0.2, 1), visibility 600ms ease;
  z-index: 10;
}

#slide-6 .promo-cinema-stage.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

#slide-6 .promo-cinema-box {
  grid-area: 1 / 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 1.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 800ms ease;
}

#slide-6 .promo-cinema-box.is-en-visible,
#slide-6 .promo-cinema-box.is-sub-visible {
  opacity: 1;
}

#slide-6 .promo-cinema-box.is-hidden {
  opacity: 0 !important;
  transition: opacity 800ms ease !important;
}

#slide-6 .promo-cinema-en {
  color: #ffffff;
  font-family: var(--font);
  font-size: clamp(1.2rem, 2.3vw, 1.85rem);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: -0.015em;
  text-align: center;
  white-space: nowrap;
  margin: 0;
  opacity: 0;
  transition: opacity 1200ms cubic-bezier(0.22, 1, 0.36, 1);
}

#slide-6 .promo-cinema-box.is-en-visible .promo-cinema-en {
  opacity: 1;
}

#slide-6 .promo-cinema-sub-wrap {
  position: absolute;
  bottom: clamp(4.5rem, 23vh, 9.5rem);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 350ms ease;
  pointer-events: none;
  z-index: 15;
  width: max-content;
  max-width: 90vw;
}

#slide-6 .promo-cinema-box.is-sub-visible .promo-cinema-sub-wrap {
  opacity: 1;
}

#slide-6 .promo-cinema-sub-badge {
  display: inline-block;
  background: #ffffff;
  color: #000000;
  font-family: var(--font);
  font-size: clamp(0.85rem, 1.35vw, 1.05rem);
  font-weight: 450;
  line-height: 1.35;
  letter-spacing: normal;
  text-align: center;
  white-space: nowrap;
  padding: 0.3rem 0.75rem;
  border-radius: 2px;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.6);
}

/* ==========================================================================
   Slide 6: Muysl Foote Product Showcase & Commerce Configurator
   ========================================================================== */

#slide-6 .foote-product-stage {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(0.6rem, 2vh, 1.8rem) clamp(1rem, 3vw, 2.8rem) clamp(3rem, 6.5vh, 4.4rem);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 1200ms cubic-bezier(0.4, 0, 0.2, 1), visibility 1200ms ease;
  z-index: 20;
  background: #000000;
  box-sizing: border-box;
  overflow-y: auto;
  overflow-x: hidden;
}

#slide-6 .foote-product-stage.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

#slide-6 .foote-product-grid {
  display: grid;
  grid-template-columns: minmax(260px, 320px) minmax(340px, 500px);
  gap: clamp(1.8rem, 4vw, 4rem);
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 960px;
  height: auto;
  max-height: 100%;
}

#slide-6 .foote-video-column {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

#slide-6 .foote-video-frame {
  position: relative;
  width: 100%;
  max-width: 300px;
  aspect-ratio: 9 / 16;
  max-height: clamp(340px, 64vh, 490px);
  border-radius: 1.15rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: #0a0a0c;
  box-shadow: 0 14px 44px rgba(0, 0, 0, 0.8), 0 0 28px rgba(56, 189, 248, 0.12);
}

#slide-6 .foote-video-player {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

#slide-6 .foote-video-tag {
  position: absolute;
  top: 0.85rem;
  left: 0.85rem;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.9);
  font-family: var(--font);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 0.22rem 0.55rem;
  border-radius: 4px;
  pointer-events: none;
}

#slide-6 .foote-details-column {
  display: flex;
  flex-direction: column;
  gap: clamp(0.5rem, 1.3vh, 1rem);
  text-align: left;
  color: #ffffff;
  min-width: 0;
  max-width: 440px;
  width: 100%;
}

#slide-6 .foote-badge {
  display: block;
  font-family: var(--font);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: #38bdf8;
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

#slide-6 .foote-title-wrap {
  display: inline-flex;
  align-items: baseline;
  gap: clamp(0.25rem, 0.5vw, 0.45rem);
  line-height: 1;
}

#slide-6 .foote-brand-text {
  font-family: var(--font);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: #ffffff;
}

#slide-6 .foote-concept-disclaimer {
  position: absolute;
  top: clamp(0.5rem, 1.8vh, 1.5rem);
  left: 0;
  right: 0;
  text-align: center;
  color: #666666;
  font-family: var(--font);
  font-size: clamp(0.625rem, 0.9vw, 0.75rem);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: normal;
  margin: 0;
  padding: 0 1rem;
  pointer-events: none;
  z-index: 10;
}

#slide-6 .foote-script-text {
  font-family: 'Alex Brush', 'Great Vibes', cursive;
  font-size: clamp(2.4rem, 4.4vw, 3.5rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: 0.01em;
  padding: 0.15em 0.25em 0.1em 0.05em;
  margin-top: -0.2em;
  margin-bottom: -0.15em;
  overflow: visible;
  display: inline-block;
  background: linear-gradient(
    135deg,
    #ffffff 0%,
    #f8fafc 18%,
    #f0f9ff 34%,
    #e0f2fe 50%,
    #bae6fd 66%,
    #7dd3fc 78%,
    #e0f2fe 88%,
    #ffffff 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
  filter: none;
}

#slide-6 .foote-price-tag {
  font-family: var(--font);
  font-size: clamp(1.15rem, 1.8vw, 1.4rem);
  font-weight: 600;
  color: #ffffff;
  letter-spacing: -0.01em;
  margin: 0;
}

#slide-6 .foote-tax-note {
  font-size: var(--fs-08);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.5);
  margin-left: 0.35rem;
}

#slide-6 .foote-description {
  font-family: var(--font);
  font-size: clamp(0.78rem, 1vw, 0.875rem);
  font-weight: 400;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.75);
  max-width: 48ch;
  margin: 0;
}

#slide-6 .foote-configurator {
  display: flex;
  flex-direction: column;
  gap: clamp(0.65rem, 1.5vh, 1.2rem);
  margin-top: 0.25rem;
  max-width: 420px;
  width: 100%;
}

#slide-6 .foote-option-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  width: 100%;
}

#slide-6 .foote-option-label {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  width: 100%;
  font-family: var(--font);
  font-size: clamp(0.625rem, 0.85vw, 0.6875rem);
  font-weight: 500;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.55);
}

#slide-6 .foote-selected-val {
  color: #ffffff;
  font-weight: 600;
  letter-spacing: normal;
}

#slide-6 .foote-size-pills {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  align-items: center;
}

#slide-6 .foote-size-btn {
  width: 2.35rem;
  min-width: 2.35rem;
  height: 2.2rem;
  box-sizing: border-box;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.03);
  color: rgba(255, 255, 255, 0.85);
  font-family: var(--font);
  font-size: 0.8125rem;
  font-weight: 500;
  line-height: 1;
  padding: 0;
  cursor: pointer;
  transition: all 180ms ease;
  overflow: hidden;
  text-align: center;
  white-space: nowrap;
}

#slide-6 .foote-size-btn:hover {
  border-color: rgba(255, 255, 255, 0.5);
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

#slide-6 .foote-size-btn.is-active {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
  font-weight: 700;
  box-shadow: 0 2px 10px rgba(255, 255, 255, 0.25);
}

#slide-6 .foote-color-swatches {
  display: flex;
  gap: 0.45rem;
  flex-wrap: wrap;
}

#slide-6 .foote-color-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.38rem 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.85);
  font-family: var(--font);
  font-size: var(--fs-08);
  font-weight: 500;
  cursor: pointer;
  transition: all 180ms ease;
  white-space: nowrap;
}

#slide-6 .foote-color-btn:hover {
  border-color: rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.08);
}

#slide-6 .foote-color-btn.is-active {
  border-color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
  color: #ffffff;
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.25);
}

#slide-6 .color-swatch-circle {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  display: inline-block;
  border: 1px solid rgba(255, 255, 255, 0.3);
  flex-shrink: 0;
}

#slide-6 .swatch-night {
  background: #0a0a0c;
}

#slide-6 .swatch-gray {
  background: linear-gradient(135deg, #a0aec0, #64748b);
}

#slide-6 .swatch-white {
  background: linear-gradient(135deg, #ffffff, #e2e8f0);
  border-color: rgba(255, 255, 255, 0.6);
}

#slide-6 .foote-region-pills {
  display: flex;
  gap: 0.5rem;
}

#slide-6 .foote-region-btn {
  flex: 1;
  max-width: 140px;
  padding: 0.42rem 0.85rem;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.85);
  font-family: var(--font);
  font-size: var(--fs-08);
  font-weight: 500;
  cursor: pointer;
  transition: all 180ms ease;
  white-space: nowrap;
}

#slide-6 .foote-region-btn:hover {
  border-color: rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.08);
}

#slide-6 .foote-region-btn.is-active {
  background: #ffffff;
  color: #000000;
  border-color: #ffffff;
  font-weight: 600;
}

#slide-6 .foote-actions {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-top: 0.3rem;
  width: 100%;
}

#slide-6 .foote-order-btn {
  width: 100%;
  max-width: 320px;
  height: 2.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  color: #000000;
  border: 0;
  border-radius: 7px;
  font-family: var(--font);
  font-size: var(--fs-10);
  font-weight: 600;
  letter-spacing: normal;
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease;
  transform: none;
}

#slide-6 .foote-order-btn:hover {
  background: #0071e3;
  color: #ffffff;
  transform: none;
}

#slide-6 .foote-order-btn:active {
  background: #0071e3;
  color: #ffffff;
  transform: none;
  opacity: 0.9;
}

#slide-6 .foote-shipping-note {
  font-family: var(--font);
  font-size: 0.6875rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: normal;
  margin: 0;
}

/* Slide 6 Responsive Breakpoints for Vertical and Horizontal Shrinking */
@media (max-height: 600px) {
  #slide-6 .foote-product-stage {
    padding-top: 0.4rem;
    padding-bottom: 2.8rem;
  }
  #slide-6 .foote-video-frame {
    max-height: 52vh;
    max-width: 240px;
  }
  #slide-6 .foote-details-column {
    gap: 0.35rem;
  }
  #slide-6 .foote-configurator {
    gap: 0.45rem;
  }
  #slide-6 .foote-brand-text {
    font-size: 1.75rem;
  }
  #slide-6 .foote-script-text {
    font-size: 2.25rem;
  }
  #slide-6 .foote-description {
    font-size: 0.75rem;
    line-height: 1.35;
  }
  #slide-6 .foote-size-btn {
    width: 2.15rem;
    min-width: 2.15rem;
    height: 1.95rem;
    font-size: 0.75rem;
  }
  #slide-6 .foote-order-btn {
    height: 2.2rem;
  }
}

@media (max-width: 820px) {
  #slide-6 .foote-product-grid {
    grid-template-columns: minmax(180px, 240px) 1fr;
    gap: 1.5rem;
  }
}

/* ==========================================================================
   Slide 7: Pricing Position Experiment (The Upside of Down)
   ========================================================================== */

#slide-7 .s7-showcase-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  position: relative;
  background: #000000;
  padding: clamp(0.8rem, 2.5vh, 2rem) clamp(1rem, 3vw, 2.5rem) clamp(3rem, 6.5vh, 4.4rem);
  box-sizing: border-box;
}

#slide-7 .s7-disclaimer {
  position: absolute;
  top: clamp(0.5rem, 1.8vh, 1.5rem);
  left: 0;
  right: 0;
  text-align: center;
  color: #666666;
  font-family: var(--font);
  font-size: clamp(0.625rem, 0.9vw, 0.75rem);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: normal;
  margin: 0;
  padding: 0 1rem;
  pointer-events: none;
  z-index: 10;
}

#slide-7 .s7-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 860px;
  max-height: 100%;
  gap: clamp(0.65rem, 1.8vh, 1.35rem);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 800ms cubic-bezier(0.22, 1, 0.36, 1) 150ms, transform 800ms cubic-bezier(0.22, 1, 0.36, 1) 150ms;
}

#slide-7.is-active .s7-container {
  opacity: 1;
  transform: translateY(0);
}

/* 2 Products Grid in the Center: Large, prominent, luxury layout */
#slide-7 .s7-products-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(210px, 280px));
  gap: clamp(1.8rem, 4.5vw, 4rem);
  align-items: center;
  justify-content: center;
  width: 100%;
}

#slide-7 .s7-product-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: clamp(0.75rem, 1.8vh, 1.15rem);
  width: 100%;
}

/* Price & Product Name block (top or bottom) */
#slide-7 .s7-info-block,
#slide-7 .s7-spacer {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  min-height: 3.2rem;
  height: 3.2rem;
  width: 100%;
  position: relative;
  z-index: 10;
}

#slide-7 .s7-product-title,
#slide-7 .s7-price-val,
#slide-7 .s7-info-below .s7-product-title,
#slide-7 .s7-info-below .s7-price-val,
#slide-7 .s7-info-above .s7-product-title,
#slide-7 .s7-info-above .s7-price-val {
  color: #ffffff !important;
  -webkit-text-fill-color: #ffffff !important;
  background: none !important;
  background-clip: border-box !important;
  -webkit-background-clip: border-box !important;
  opacity: 1 !important;
  filter: none !important;
  font-family: var(--font);
  text-align: center;
  -webkit-font-smoothing: antialiased;
}

#slide-7 .s7-product-title {
  font-size: clamp(0.95rem, 1.3vw, 1.12rem);
  font-weight: 700 !important;
  letter-spacing: -0.01em;
  margin: 0;
  line-height: 1.25;
  text-shadow: 0 0 1px rgba(255, 255, 255, 0.8) !important;
}

#slide-7 .s7-price-val {
  font-size: clamp(1.2rem, 1.8vw, 1.45rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0;
  line-height: 1.25;
  text-shadow: 0 0 1px rgba(255, 255, 255, 0.8) !important;
}

/* Luxury Image Frame: Prominent, high-impact fashion framing */
#slide-7 .s7-image-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 13;
  max-height: clamp(260px, 42vh, 360px);
  border-radius: 1.15rem;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: #0a0a0c;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

#slide-7 .s7-product-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 300ms ease;
}

#slide-7 .s7-product-card:hover .s7-product-img {
  transform: scale(1.02);
}

/* S7 Actions */
#slide-7 .s7-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 0.4rem;
}

#slide-7 .s7-research-btn {
  height: 2.5rem;
  font-size: var(--fs-08);
  font-weight: 700;
  padding: 0 1.25rem;
}

/* Slide 7 Responsive Breakpoints for Vertical and Horizontal Shrinking */
@media (max-height: 600px) {
  #slide-7 .s7-showcase-layout {
    padding-top: 0.4rem;
    padding-bottom: 2.8rem;
  }
  #slide-7 .s7-container {
    gap: 0.45rem;
  }
  #slide-7 .s7-image-frame {
    max-height: 34vh;
  }
  #slide-7 .s7-info-block,
  #slide-7 .s7-spacer {
    min-height: 2.6rem;
    height: 2.6rem;
  }
  #slide-7 .s7-product-title {
    font-size: 0.85rem;
  }
  #slide-7 .s7-price-val {
    font-size: 1.05rem;
  }
  #slide-7 .s7-research-btn {
    height: 2.2rem;
  }
}

@media (max-width: 600px) {
  #slide-7 .s7-products-grid {
    grid-template-columns: repeat(2, minmax(130px, 1fr));
    gap: 1.2rem;
  }
}

/* Centered Pop-up Modal Overlay */
#slide-7 .s7-popup-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 280ms cubic-bezier(0.22, 1, 0.36, 1), visibility 280ms ease;
}

#slide-7 .s7-popup-overlay.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

#slide-7 .s7-popup-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(14px);
  cursor: pointer;
}

#slide-7 .s7-popup-card {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 620px;
  background: #000000;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 0;
  padding: clamp(1.4rem, 2.8vh, 2rem) clamp(1.4rem, 3vw, 2.2rem);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.95);
  text-align: left;
  transform: scale(0.96) translateY(8px);
  transition: transform 300ms cubic-bezier(0.22, 1, 0.36, 1);
  box-sizing: border-box;
}

#slide-7 .s7-popup-overlay.is-active .s7-popup-card {
  transform: scale(1) translateY(0);
}

#slide-7 .s7-popup-close {
  position: absolute;
  top: 1rem;
  right: 1.1rem;
  background: transparent;
  border: 0;
  color: #888888;
  font-size: 1.45rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  transition: color 140ms ease;
}

#slide-7 .s7-popup-close:hover {
  color: #ffffff;
}

#slide-7 .s7-popup-title {
  font-family: var(--font);
  font-size: clamp(1.35rem, 2.2vw, 1.7rem);
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 0.85rem;
  letter-spacing: -0.015em;
  padding-right: 2rem;
}

#slide-7 .s7-popup-text {
  font-family: var(--font);
  font-size: clamp(0.8125rem, 1.05vw, 0.9375rem);
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.82);
  margin: 0 0 1.25rem;
}

/* Apple-style Footnote Citation Link with diagonal arrow */
#slide-7 .s7-popup-citation {
  display: flex;
  align-items: center;
  padding-top: 0.85rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

#slide-7 .s7-citation-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  color: #86868b;
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: color 150ms ease;
}

#slide-7 .s7-citation-link:hover {
  color: #ffffff;
}

#slide-7 .external-arrow {
  display: inline-block;
  transition: transform 150ms ease;
}

#slide-7 .s7-citation-link:hover .external-arrow {
  transform: translate(1px, -1px);
}

/* ==========================================================================
   Slide 8: Behavioral Persuasion & Pricing (Çıpalama, Yem Etkisi)
   ========================================================================== */

#slide-8 .s8-layout {
  position: relative;
  width: 100%;
  height: 100%;
  background: #000000;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  padding: clamp(0.5rem, 1.8vh, 1.8rem) clamp(1.2rem, 3.5vw, 3.5rem) clamp(2.8rem, 6vh, 4.2rem);
  overflow: hidden;
}

/* Stage 1: Central 2 Buttons Stage — Typography matches Slide 5 Idea Statement */
#slide-8 .s8-menu-stage {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 2vh, 2.5rem);
  z-index: 2;
  opacity: 1;
  visibility: visible;
  transition: opacity 350ms cubic-bezier(0.22, 1, 0.36, 1), visibility 350ms ease, transform 350ms cubic-bezier(0.22, 1, 0.36, 1);
  transform: translateY(0);
}

#slide-8 .s8-menu-stage.is-hidden {
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  pointer-events: none;
}

#slide-8 .s8-button-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(1rem, 2.2vh, 1.5rem);
  width: 100%;
  max-width: 550px;
}

#slide-8 .s8-principle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: clamp(3.4rem, 6.5vh, 4.2rem);
  padding: 0.85rem clamp(1.2rem, 3vw, 2.4rem);
  background: #000000;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 0;
  color: var(--white);
  font-family: var(--font);
  font-size: var(--fs-16); /* 20px (1.25rem) — unified scale step directly above --fs-14 */
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: 0.01em;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease;
  user-select: none;
  text-align: center;
  box-sizing: border-box;
}

#slide-8 .s8-principle-btn:hover,
#slide-8 .s8-principle-btn:focus-visible {
  background: #171717;
  border-color: rgba(255, 255, 255, 0.55);
  outline: none;
}

/* Stage 2: Centered Story Detail Stage — Typography matches Slide 2 Detail */
#slide-8 .s8-detail-stage {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: clamp(1.2rem, 3.5vh, 3rem) clamp(1.2rem, 4vw, 4rem) clamp(2.8rem, 6vh, 4.2rem);
  background: #000000;
  z-index: 5;
  box-sizing: border-box;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 350ms cubic-bezier(0.22, 1, 0.36, 1), visibility 350ms ease;
}

#slide-8 .s8-detail-stage.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

#slide-8 .s8-detail-backdrop {
  position: absolute;
  inset: 0;
  background: transparent;
  cursor: pointer;
  z-index: 1;
}

#slide-8 .s8-close-btn {
  position: absolute;
  top: clamp(1rem, 2.5vh, 1.8rem);
  right: clamp(1.2rem, 3vw, 2.5rem);
  z-index: 10;
  background: transparent;
  border: 0;
  color: #888888;
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.4rem 0.6rem;
  transition: color 140ms ease;
}

#slide-8 .s8-close-btn:hover {
  color: #ffffff;
}

/* Story Panel Layout */
#slide-8 .s8-story-panel {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  width: 100%;
  max-width: 680px;
  gap: clamp(0.75rem, 1.8vh, 1.25rem);
  position: relative;
  z-index: 5;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 350ms ease, transform 350ms ease;
  pointer-events: auto;
}

#slide-8 .s8-story-panel.is-active {
  display: flex;
  opacity: 1;
  transform: translateY(0);
}

#slide-8 .s8-story-title {
  color: var(--white);
  font-family: var(--font);
  font-size: var(--fs-24); /* 34px — strictly matches Slide 2 intro-detail-heading */
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: normal;
  margin: 0;
  text-align: center;
}

#slide-8 .s8-story-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 100%;
  gap: clamp(0.65rem, 1.5vh, 1rem);
}

#slide-8 .s8-story-subtitle {
  color: var(--muted);
  font-family: var(--font);
  font-size: var(--fs-10); /* 14px — strictly matches Slide 2 intro-detail-meta */
  font-weight: 400;
  font-style: italic;
  line-height: 1.5;
  letter-spacing: normal;
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  text-align: center;
}

#slide-8 .s8-lead-text,
#slide-8 .s8-core-insight {
  color: var(--white);
  font-family: var(--font);
  font-size: var(--fs-18); /* 22px — strictly matches Slide 2 intro-detail-text */
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: normal;
  border-left: none;
  padding: 0;
  margin: 0;
  text-align: center;
  max-width: 42ch;
}

/* Pricing Tiers for Decoy Effect */
#slide-8 .s8-pricing-tiers {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(0.6rem, 1.4vw, 1rem);
  width: 100%;
  max-width: 540px;
  margin: 0.4rem auto;
}

#slide-8 .s8-tier-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: clamp(0.75rem, 1.6vh, 1.1rem);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

#slide-8 .s8-tier-target {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.4);
}

#slide-8 .s8-tier-label {
  font-family: var(--font);
  font-size: var(--fs-10); /* 14px */
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

#slide-8 .s8-tier-price {
  font-family: var(--font);
  font-size: var(--fs-24); /* 34px */
  font-weight: 700;
  color: var(--white);
  letter-spacing: normal;
  line-height: 1.2;
}

#slide-8 .s8-decoy-tag {
  font-family: var(--font);
  font-size: var(--fs-08); /* 12px */
  font-weight: 400;
  color: var(--muted);
  margin-top: 0.3rem;
}

/* Responsive Breakpoints for Slide 8 */
@media (max-width: 480px) {
  #slide-8 .s8-principle-btn {
    white-space: normal;
    padding: 0.85rem 1rem;
  }
}

@media (max-height: 560px) {
  #slide-8 .s8-layout {
    padding-top: 0.4rem;
    padding-bottom: 2.6rem;
  }
  #slide-8 .s8-button-group {
    max-width: 500px;
    gap: 0.65rem;
  }
  #slide-8 .s8-principle-btn {
    min-height: 3rem;
    padding: 0.75rem 1.5rem;
    font-size: var(--fs-14); /* 18px */
  }
  #slide-8 .s8-detail-stage {
    padding: 1rem 1.2rem 2.6rem;
  }
  #slide-8 .s8-story-title {
    font-size: var(--fs-18);
  }
  #slide-8 .s8-lead-text {
    font-size: var(--fs-14);
    line-height: 1.5;
  }
  #slide-8 .s8-core-insight {
    font-size: var(--fs-14);
  }
  #slide-8 .s8-pricing-tiers {
    max-width: 440px;
    gap: 0.4rem;
  }
  #slide-8 .s8-tier-card {
    padding: 0.5rem;
  }
  #slide-8 .s8-tier-price {
    font-size: var(--fs-18);
  }
}

@media (max-width: 640px) {
  #slide-8 .s8-pricing-tiers {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Slide 9: Carl Gustav Jung Quote
   ========================================================================== */

#slide-9 .s9-quote-layout {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-sizing: border-box;
  padding: clamp(1.5rem, 4vh, 3.5rem) clamp(1.5rem, 5vw, 4rem) clamp(3rem, 6.5vh, 4.5rem);
}

#slide-9 .s9-quote-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  width: 100%;
  max-width: min(92vw, 56rem);
  margin: 0;
  padding: 0;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 1400ms cubic-bezier(0.22, 1, 0.36, 1), transform 1400ms cubic-bezier(0.22, 1, 0.36, 1);
}

#slide-9.is-active .s9-quote-container {
  opacity: 1;
  transform: translateY(0);
}

#slide-9 .s9-quote-text {
  color: var(--white);
  font-family: var(--font);
  font-size: clamp(1.2rem, 2.3vw, 1.85rem); /* exactly matching Muysl Foote promo cinema text */
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: -0.015em;
  margin: 0;
  text-wrap: balance;
  width: 100%;
  max-width: 50ch;
}

#slide-9 .s9-quote-author {
  color: var(--muted);
  font-family: var(--font);
  font-size: var(--fs-10); /* 14px — identical to hero-meta */
  font-style: italic;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: normal;
  text-transform: none;
  margin-top: clamp(1.4rem, 3vh, 2.2rem);
  display: block;
}

/* ==========================================================================
   Slide 10: Closing / Outro — Centered, identical to Slide 1 with italic thank you
   ========================================================================== */

#slide-10 .s10-hero-layout {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--stage-y) var(--stage-x) calc(var(--stage-y) + 2.1rem);
  box-sizing: border-box;
}

#slide-10 .s10-hero-message {
  width: 100%;
  max-width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 0;
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 1200ms cubic-bezier(0.22, 1, 0.36, 1), transform 1200ms cubic-bezier(0.22, 1, 0.36, 1);
}

#slide-10.is-active .s10-hero-message {
  opacity: 1;
  transform: translateY(0);
}

#slide-10 .s10-hero-meta {
  color: var(--muted);
  font-family: var(--font);
  font-size: var(--fs-10); /* 14px — identical to #slide-1 .hero-meta */
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: normal;
  text-transform: uppercase;
  margin: 0 0 1.25rem 0;
}

#slide-10 .s10-hero-title {
  color: var(--white);
  font-family: var(--font);
  font-size: var(--fs-24); /* 34px — strictly matches Slide 1 hero title */
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: normal;
  text-wrap: balance;
  text-align: center;
  margin: 0;
}

#slide-10 .s10-thank-you {
  margin-top: 1.85rem;
  font-family: var(--font);
  font-size: var(--fs-10); /* 14px — identical to hero-meta */
  font-style: italic;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: normal;
  text-transform: none;
  color: var(--muted);
  text-align: center;
  user-select: none;
}

/* Responsive adjustments for Slide 9 & 10 */
@media (max-width: 720px) {
  #slide-9 .s9-quote-text {
    font-size: clamp(1.1rem, 2.8vw, 1.35rem);
  }
  #slide-10 .s10-hero-title {
    font-size: var(--fs-18);
  }
}

@media (max-height: 560px) {
  #slide-9 .s9-quote-text {
    font-size: clamp(1.05rem, 2.6vw, 1.35rem);
  }
  #slide-9 .s9-quote-author {
    margin-top: 0.8rem;
  }
  #slide-10 .s10-hero-meta {
    margin-bottom: 0.65rem;
  }
  #slide-10 .s10-hero-title {
    font-size: var(--fs-18);
  }
  #slide-10 .s10-thank-you {
    margin-top: 1rem;
  }
}

/* ==========================================================================
   8. RESPONSIVE & ACCESSIBILITY MEDIA QUERIES
   ========================================================================== */

@media (max-height: 820px) {
  #slide-5 .sound-card-copy {
    padding-top: clamp(1.8rem, 5.5vh, 3rem);
  }
  #slide-5 .sound-card-title {
    font-size: clamp(2.25rem, 3.4vh, 2.5rem); /* 36px to 48px */
  }
  #slide-5 .sound-card-sub {
    font-size: var(--fs-14); /* 18px */
  }
}

@media (max-height: 760px) {
  :root {
    --stage-y: clamp(0.75rem, 2.2vh, 1.6rem);
  }
  .controls { bottom: 0.45rem; }
  .slide-inner { padding-bottom: calc(var(--stage-y) + 2.2rem); }
  #slide-5 .sound-card-copy {
    padding: clamp(1.2rem, 3.8vh, 2.2rem) clamp(1rem, 2vw, 2rem) 0.25rem;
    gap: 0.35rem;
  }
  #slide-5 .sound-card-title {
    font-size: clamp(1.875rem, 3.8vh, 2.5rem); /* 30px to 40px (Keeps headline prominent, never tiny 22px!) */
  }
  #slide-5 .sound-card-sub {
    font-size: var(--fs-12); /* 16px */
    line-height: 1.35;
  }
  #slide-5 .sound-card-cta {
    height: 2.125rem;
    padding: 0 1.25rem;
    margin-top: 0.45rem;
  }
  #slide-5 .sound-card-media {
    flex: 1.4;
    padding: 0;
  }
  #slide-5 .process-canvas-panel.is-step-8-plus .sound-card-img {
    transform: none;
  }
  #slide-6 .muysl-text {
    font-size: clamp(1.85rem, 4.5vw, 3.25rem);
  }
  #slide-6 .muysl-footer-script {
    font-size: clamp(2.75rem, 6.5vw, 4.85rem);
  }
  #slide-6 .foote-product-grid {
    gap: clamp(1rem, 2.5vw, 2rem);
    max-width: 880px;
  }
  #slide-6 .foote-video-frame {
    max-height: clamp(280px, 60vh, 420px);
    max-width: 260px;
  }
}

@media (max-height: 640px) {
  #slide-5 .sound-card-copy {
    padding: clamp(0.85rem, 2.8vh, 1.5rem) clamp(0.75rem, 1.8vw, 1.5rem) 0.2rem;
    gap: 0.25rem;
  }
  #slide-5 .sound-card-title {
    font-size: clamp(1.5rem, 3.2vh, 1.875rem); /* 24px to 30px */
  }
  #slide-5 .sound-card-sub {
    font-size: var(--fs-10); /* 14px */
    line-height: 1.3;
  }
  #slide-5 .sound-card-cta {
    height: 1.875rem;
    font-size: var(--fs-08); /* 12px */
    padding: 0 1rem;
    margin-top: 0.35rem;
  }
  #slide-5 .sound-card-note {
    margin-top: 0.25rem;
    font-size: 0.6875rem; /* 11px */
  }
  #slide-5 .sound-card-media {
    flex: 1.3;
    padding: 0;
  }
  #slide-5 .process-canvas-panel.is-step-8-plus .sound-card-img {
    transform: none; /* 100% full width, edge-to-edge, zero clipping */
  }
  #slide-6 .muysl-text {
    font-size: clamp(1.5rem, 3.8vw, 2.35rem);
  }
  #slide-6 .muysl-footer-script {
    font-size: clamp(2.25rem, 5.5vw, 3.65rem);
  }
  #slide-6 .foote-product-grid {
    grid-template-columns: minmax(180px, 220px) 1fr;
    gap: 1.25rem;
  }
  #slide-6 .foote-video-frame {
    max-height: clamp(220px, 55vh, 290px);
    max-width: 190px;
  }
  #slide-6 .foote-details-column {
    gap: 0.45rem;
  }
  #slide-6 .foote-configurator {
    gap: 0.4rem;
  }
  #slide-6 .foote-description {
    display: none;
  }
}

@media (max-width: 980px) and (orientation: landscape) {
  :root { --stage-x: 2rem; --stage-y: 2rem; }
  .text-button { display: none; }
  #language-button { display: inline-grid; }
  .overview-grid { grid-template-columns: repeat(3, 1fr); }
  #slide-5 .sound-card-title { font-size: clamp(1.875rem, 3.5vw, 2.375rem); /* 30px to 38px */ }
  #slide-5 .sound-card-sub { font-size: var(--fs-12); /* 16px */ }
}

@media (orientation: portrait), (max-aspect-ratio: 1/1) {
  .orientation-gate { display: grid; }
  .presentation, .controls, .progress-track, .panel, .notes-drawer { display: none !important; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}