/* ===== Design Tokens ===== */
:root {
  --blue: #2563EB;
  --blue-dark: #1D4ED8;
  --blue-light: #3B82F6;
  --orange: #F97316;
  --orange-dark: #EA580C;
  --white: #FFFFFF;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-400: #9CA3AF;
  --gray-600: #4B5563;
  --gray-800: #1F2937;
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.85);
  --glass-shadow: 0 8px 32px rgba(37, 99, 235, 0.12), 0 2px 8px rgba(0, 0, 0, 0.06);
  --font-bn: 'Hind Siliguri', sans-serif;
  --font-en: 'Inter', sans-serif;
  --slide-ratio: 16 / 9;
}

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

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: var(--font-bn);
  background: var(--gray-100);
  color: var(--gray-800);
  -webkit-font-smoothing: antialiased;
}

/* ===== Presenter auth gate ===== */
.auth-gate {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(ellipse at 20% 20%, rgba(37, 99, 235, 0.18), transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(249, 115, 22, 0.14), transparent 45%),
    linear-gradient(160deg, #EFF6FF 0%, #F8FAFC 45%, #FFF7ED 100%);
}

.auth-gate[hidden] {
  display: none !important;
}

.auth-gate-card {
  width: min(100%, 420px);
  padding: 36px 32px 32px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.95);
  box-shadow: 0 20px 50px rgba(15, 23, 42, 0.12), 0 4px 16px rgba(37, 99, 235, 0.08);
  backdrop-filter: blur(12px);
  text-align: center;
}

.auth-gate-brand {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 18px;
}

.auth-gate-title {
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 8px;
  line-height: 1.3;
}

.auth-gate-sub {
  font-size: 0.95rem;
  color: var(--gray-600);
  margin-bottom: 28px;
  line-height: 1.5;
}

.auth-gate-form {
  text-align: left;
}

.auth-gate-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-600);
  margin-bottom: 8px;
}

.auth-gate-input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1.5px solid var(--gray-200);
  background: #fff;
  font-family: var(--font-en);
  font-size: 1rem;
  color: var(--gray-800);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.auth-gate-input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.auth-gate-error {
  margin-top: 10px;
  font-size: 0.88rem;
  color: #DC2626;
  font-weight: 600;
}

.auth-gate-btn {
  width: 100%;
  margin-top: 18px;
  padding: 14px 18px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%);
  color: #fff;
  font-family: var(--font-bn);
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.28);
}

.auth-gate-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.34);
}

.auth-gate-btn:disabled {
  opacity: 0.7;
  cursor: wait;
  transform: none;
}

body.auth-locked .presentation,
body.auth-locked .nav-controls,
body.auth-locked .progress-bar,
body.auth-locked .slide-dots,
body.auth-locked .sync-bar,
body.auth-locked .qr-fullscreen {
  visibility: hidden;
  pointer-events: none;
}

/* ===== Presentation Container ===== */
.presentation {
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

/* ===== Slide Base (16:9) ===== */
.slide {
  position: absolute;
  width: min(96vw, calc(96vh * var(--slide-ratio)));
  aspect-ratio: var(--slide-ratio);
  border-radius: 16px;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.96) translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              visibility 0.6s;
  box-shadow: 0 25px 60px rgba(37, 99, 235, 0.15), 0 10px 20px rgba(0, 0, 0, 0.08);
  background: var(--white);
}

.slide.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1) translateY(0);
  z-index: 10;
}

.slide.prev {
  opacity: 0;
  transform: scale(0.96) translateY(-20px);
}

.slide-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.slide-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.06) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 20%, rgba(249, 115, 22, 0.05) 0%, transparent 50%);
}

.slide-bg::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.04) 0%, transparent 70%);
  top: -100px;
  right: -100px;
}

.bg-hero { background: linear-gradient(135deg, #EFF6FF 0%, #FFFFFF 50%, #FFF7ED 100%); }

.bg-hero-video {
  background: #0B1220;
}

.bg-hero-video::before,
.bg-hero-video::after {
  display: none;
}

.hero-video-wrap {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.hero-video-wrap .hero-bg-video,
.hero-video-wrap video {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  object-fit: cover;
  border: 0;
  transform: translate(-50%, -50%);
}

.hero-video-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(120deg, rgba(15, 23, 42, 0.78) 0%, rgba(15, 23, 42, 0.55) 42%, rgba(15, 23, 42, 0.35) 100%),
    linear-gradient(180deg, rgba(15, 23, 42, 0.25) 0%, rgba(15, 23, 42, 0.55) 100%);
}

.slide[data-slide="1"] .hero-text .badge {
  background: rgba(249, 115, 22, 0.2);
  color: #FDBA74;
}

.slide[data-slide="1"] .hero-text h1 {
  color: #FFFFFF;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

.slide[data-slide="1"] .hero-text .tagline {
  color: #93C5FD;
}

.slide[data-slide="1"] .hero-text .subtitle {
  color: rgba(255, 255, 255, 0.82);
}

.slide[data-slide="1"] .platform-badges .glass-pill {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.22);
  color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
}

.slide[data-slide="1"] .platform-badges .glass-pill .material-icons-round {
  color: #93C5FD;
}

.slide[data-slide="1"] .footer-brand {
  color: rgba(255, 255, 255, 0.75);
}

.slide[data-slide="1"] .footer-brand strong {
  color: #FFFFFF;
}
.bg-challenges { background: linear-gradient(160deg, #FEF2F2 0%, #FFFFFF 60%, #EFF6FF 100%); }
.bg-solution { background: linear-gradient(135deg, #EFF6FF 0%, #FFFFFF 100%); }
.bg-ecosystem { background: linear-gradient(180deg, #FFFFFF 0%, #EFF6FF 100%); }
.bg-student { background: linear-gradient(135deg, #EFF6FF 0%, #FFFFFF 70%); }
.bg-teacher { background: linear-gradient(135deg, #FFF7ED 0%, #FFFFFF 70%); }
.bg-parent { background: linear-gradient(135deg, #EFF6FF 0%, #F0FDF4 50%, #FFFFFF 100%); }
.bg-admin { background: linear-gradient(160deg, #FFFFFF 0%, #EFF6FF 100%); }
.bg-features { background: linear-gradient(180deg, #F9FAFB 0%, #EFF6FF 100%); }
.bg-why { background: linear-gradient(135deg, #FFFFFF 0%, #FFF7ED 100%); }
.bg-pricing { background: linear-gradient(160deg, #EFF6FF 0%, #FFFFFF 100%); }
.bg-setup { background: linear-gradient(135deg, #FFFFFF 0%, #EFF6FF 100%); }
.bg-subscription { background: linear-gradient(160deg, #EFF6FF 0%, #FFF7ED 100%); }
.bg-referral { background: linear-gradient(135deg, #FFF7ED 0%, #FFFFFF 60%, #EFF6FF 100%); }
.bg-income { background: linear-gradient(160deg, #EFF6FF 0%, #FFFFFF 100%); }
.bg-income2 { background: linear-gradient(135deg, #FFF7ED 0%, #FFFFFF 100%); }
.bg-opportunity { background: linear-gradient(180deg, #EFF6FF 0%, #FFFFFF 100%); }
.bg-referral-why { background: linear-gradient(135deg, #FFFFFF 0%, #FFF7ED 100%); }
.bg-schools { background: linear-gradient(160deg, #EFF6FF 0%, #FFFFFF 100%); }
.bg-vision { background: linear-gradient(135deg, #1D4ED8 0%, #2563EB 40%, #3B82F6 100%); }
.bg-vision-light { background: linear-gradient(135deg, #EFF6FF 0%, #FFFFFF 55%, #FFF7ED 100%); }
.bg-grow { background: linear-gradient(160deg, #FFFFFF 0%, #EFF6FF 100%); }
.bg-thanks { background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 50%, #1E40AF 100%); }
.bg-thanks-light { background: linear-gradient(160deg, #EFF6FF 0%, #FFFFFF 55%, #FFF7ED 100%); }

.slide-content {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  padding: 4% 5%;
  display: flex;
  flex-direction: column;
}

/* ===== Glassmorphism ===== */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  box-shadow: var(--glass-shadow);
}

.glass-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--gray-600);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.08);
}

.glass-pill .material-icons-round { font-size: 16px; color: var(--blue); }

/* ===== Typography ===== */
h1, h2, h3 {
  font-family: var(--font-en);
  font-weight: 700;
  line-height: 1.15;
  color: var(--gray-800);
}

h1 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h2 { font-size: clamp(1.4rem, 2.8vw, 2.2rem); }
h3 { font-size: clamp(0.9rem, 1.5vw, 1.1rem); }

.highlight-blue { color: var(--blue); }
.highlight-orange { color: var(--orange); }

.section-label {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
  background: rgba(37, 99, 235, 0.08);
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 8px;
}

.lead {
  font-size: clamp(0.9rem, 1.4vw, 1.1rem);
  color: var(--gray-600);
  margin-top: 4px;
}

.center { text-align: center; }
.center-text { text-align: center; font-size: clamp(0.85rem, 1.3vw, 1rem); color: var(--gray-600); margin-top: auto; }

.slide-header { margin-bottom: 3%; }
.slide-header.center .section-label { margin-bottom: 8px; }

/* ===== Slide 1: Hero ===== */
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4%;
  align-items: center;
  flex: 1;
}

.badge {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--orange);
  background: rgba(249, 115, 22, 0.1);
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 12px;
}

.tagline {
  font-size: clamp(1rem, 2vw, 1.5rem);
  font-weight: 600;
  color: var(--blue);
  margin: 8px 0;
}

.subtitle {
  font-size: clamp(0.75rem, 1.2vw, 0.95rem);
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 16px;
  max-width: 90%;
}

.platform-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-visual svg { width: 100%; max-height: 280px; }

.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-illustration {
  max-width: min(420px, 100%);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: clamp(0.7rem, 1vw, 0.85rem);
  color: var(--gray-400);
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--gray-200);
}

.footer-brand strong {
  font-family: var(--font-en);
  color: var(--gray-800);
  font-weight: 600;
}

/* ===== Slide 2: Challenges ===== */
.challenge-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  flex: 1;
  align-content: center;
}

.challenge-card {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  transition: transform 0.3s;
}

.challenge-card:hover { transform: translateY(-2px); }

.challenge-card .material-icons-round {
  font-size: 20px;
  color: #EF4444;
  flex-shrink: 0;
}

.challenge-card p {
  font-size: clamp(0.65rem, 1vw, 0.8rem);
  font-weight: 500;
  line-height: 1.3;
}

/* ===== Slide 3: Ecosystem Hub ===== */
.ecosystem-hub {
  position: relative;
  width: 100%;
  max-width: 620px;
  height: min(42vh, 360px);
  min-height: 280px;
  margin: 0 auto;
  flex: 1;
}

.hub-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.hub-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-rows: 1fr auto 1fr;
  width: 100%;
  height: 100%;
  gap: 12px;
  align-items: center;
  justify-items: center;
}

.hub-pos-top    { grid-column: 2; grid-row: 1; }
.hub-pos-center { grid-column: 2; grid-row: 2; }
.hub-pos-bottom { grid-column: 2; grid-row: 3; }
.hub-pos-left   { grid-column: 1; grid-row: 2; }
.hub-pos-right  { grid-column: 3; grid-row: 2; }

.hub-center {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-align: center;
  z-index: 3;
}

.hub-center .material-icons-round { font-size: 48px; color: var(--blue); }
.hub-center p { font-size: 0.95rem; font-weight: 600; color: var(--blue); }

.hub-node {
  width: 130px;
  min-height: 90px;
  padding: 14px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: 18px;
  transition: transform 0.3s, box-shadow 0.3s;
  z-index: 2;
}

.hub-node .material-icons-round { font-size: 34px; color: var(--orange); }

.hub-node:hover,
.hub-center:hover {
  transform: scale(1.06);
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.18);
}

/* ===== Slide 4: Ecosystem Flow ===== */
.ecosystem-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  flex: 1;
  align-content: center;
}

.app-card {
  padding: 20px 14px;
  text-align: center;
  transition: transform 0.3s;
}

.app-card:hover { transform: translateY(-4px); }

.app-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 10px;
}

.app-icon.blue { background: rgba(37, 99, 235, 0.12); color: var(--blue); }
.app-icon.orange { background: rgba(249, 115, 22, 0.12); color: var(--orange); }
.app-icon .material-icons-round { font-size: 26px; }

.tech-tags {
  display: flex;
  gap: 4px;
  justify-content: center;
  margin-top: 8px;
}

.tech-tags span {
  font-family: var(--font-en);
  font-size: 0.6rem;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 50px;
  background: var(--gray-100);
  color: var(--gray-600);
}

.cloud-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  margin-top: 16px;
  font-family: var(--font-en);
  font-size: 0.85rem;
}

.cloud-banner .material-icons-round { color: var(--blue); }

/* ===== Shared slide illustrations ===== */
.slide-illustration {
  width: 100%;
  max-width: 320px;
  height: auto;
  display: block;
  margin: 0 auto;
  object-fit: contain;
  filter: drop-shadow(0 16px 32px rgba(37, 99, 235, 0.15));
}

.slide-illustration.blend-screen {
  mix-blend-mode: screen;
  filter: drop-shadow(0 12px 28px rgba(37, 99, 235, 0.12));
}

.illustration-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  margin: 0 auto;
}

.illustration-wrap.blend-wrap {
  background: transparent;
}

/* ===== Slide 4: Ecosystem layout ===== */
.ecosystem-slide .slide-content {
  justify-content: center;
}

.ecosystem-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 4%;
  flex: 1;
  align-items: center;
}

.ecosystem-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.ecosystem-main {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.ecosystem-apps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.ecosystem-main .cloud-banner {
  margin-top: 4px;
}

/* ===== Slide 9: Features layout ===== */
.features-slide .slide-content {
  justify-content: center;
}

.features-layout {
  display: grid;
  grid-template-columns: 0.55fr 1.45fr;
  gap: 3%;
  flex: 1;
  align-items: center;
}

.features-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.features-main {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.features-main .features-grid {
  grid-template-columns: repeat(4, 1fr);
}

/* ===== Slide 11: Setup layout ===== */
.setup-slide .slide-content {
  justify-content: center;
}

.setup-layout {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 4%;
  flex: 1;
  align-items: center;
}

.setup-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.setup-main {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.setup-main .slide-header {
  margin-bottom: 0;
}

.setup-main .pricing-hero {
  margin: 8px 0;
  justify-content: flex-start;
}

.setup-main .price-breakdown {
  flex: 0;
}

/* ===== Slide 13: Subscription layout ===== */
.subscription-slide .slide-content {
  justify-content: center;
}

.subscription-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 4%;
  flex: 1;
  align-items: center;
}

.subscription-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.price-tag-wrap .slide-illustration {
  max-width: 360px;
}

.subscription-main {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.subscription-main .subscription-card {
  margin: 0;
  max-width: none;
  flex: 0;
}

/* ===== App Slides (5-7) ===== */
.app-slide {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4%;
  align-items: center;
}

.app-slide.reverse { direction: rtl; }
.app-slide.reverse > * { direction: ltr; }

.app-info h2 { margin-bottom: 12px; }

.feature-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.feature-list.cols-2 { grid-template-columns: 1fr 1fr; }

.feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: clamp(0.7rem, 1.1vw, 0.85rem);
  padding: 6px 10px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.5);
}

.feature-item .material-icons-round {
  font-size: 18px;
  color: var(--blue);
}

/* Phone Mockup */
.phone-mockup {
  display: flex;
  justify-content: center;
  align-items: center;
}

.phone-frame {
  width: clamp(140px, 18vw, 200px);
  aspect-ratio: 9/19;
  background: var(--gray-800);
  border-radius: 28px;
  padding: 8px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2), inset 0 0 0 2px #374151;
}

.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 22px;
  overflow: hidden;
  background: var(--white);
}

.app-screenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.web-screenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
  display: block;
  background: #f8fafc;
}

.browser-mockup {
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}

.browser-chrome {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 12px;
  background: linear-gradient(180deg, #f3f4f6 0%, #e5e7eb 100%);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  flex-shrink: 0;
}

.browser-chrome span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #d1d5db;
}

.browser-chrome span:nth-child(1) { background: #ef4444; }
.browser-chrome span:nth-child(2) { background: #f59e0b; }
.browser-chrome span:nth-child(3) { background: #22c55e; }

.browser-url {
  margin-left: 8px;
  flex: 1;
  font-family: var(--font-bn);
  font-size: 0.72rem;
  color: var(--gray-600);
  background: #fff;
  border-radius: 6px;
  padding: 4px 10px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.browser-mockup .web-screenshot {
  flex: 1;
  min-height: 0;
}

.screen-header {
  background: var(--blue);
  color: white;
  text-align: center;
  padding: 12px 8px;
  font-family: var(--font-en);
  font-size: 0.7rem;
  font-weight: 600;
}

.screen-header.orange { background: var(--orange); }

.screen-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  padding: 10px;
}

.screen-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 4px;
  background: var(--gray-50);
  border-radius: 10px;
}

.screen-tile .material-icons-round { font-size: 18px; color: var(--blue); }
.screen-tile small { font-size: 0.5rem; font-family: var(--font-en); color: var(--gray-600); }

.screen-list { padding: 8px; }
.list-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  font-size: 0.6rem;
  font-family: var(--font-en);
  border-bottom: 1px solid var(--gray-100);
}
.list-item .material-icons-round { font-size: 14px; color: var(--orange); }

.parent-card {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px;
  margin: 8px;
  background: var(--gray-50);
  border-radius: 10px;
  font-size: 0.6rem;
}
.parent-card .material-icons-round { color: var(--blue); font-size: 24px; }
.parent-card strong { display: block; font-size: 0.65rem; }
.parent-card small { color: var(--gray-400); }
.status-badge {
  margin-left: auto;
  background: #DCFCE7;
  color: #16A34A;
  padding: 2px 8px;
  border-radius: 50px;
  font-family: var(--font-en);
  font-size: 0.5rem;
  font-weight: 600;
}

.parent-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  padding: 0 8px 8px;
  text-align: center;
}
.parent-stats strong { display: block; font-family: var(--font-en); font-size: 0.8rem; color: var(--blue); }
.parent-stats small { font-size: 0.5rem; color: var(--gray-400); }

/* ===== Slide 8: Admin ===== */
.admin-slide .slide-content {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.admin-slide .slide-header {
  flex-shrink: 0;
  margin-bottom: 0;
}

.admin-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 20px;
  flex: 1;
  min-height: 0;
  align-items: stretch;
}

.admin-preview-col,
.admin-modules-col {
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
}

.admin-modules-title {
  font-family: var(--font-bn);
  font-size: clamp(0.85rem, 1.2vw, 1rem);
  font-weight: 600;
  color: var(--gray-600);
  margin: 0 0 10px;
  flex-shrink: 0;
}

.admin-preview-col .browser-mockup.dashboard-mockup {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
}

.admin-screenshot-wrap {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  background: #f8fafc;
  display: flex;
  align-items: flex-start;
  justify-content: center;
}

.admin-preview-col .web-screenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
}

.admin-modules-col .admin-modules {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  align-content: start;
  align-items: start;
}

.dashboard-mockup {
  display: flex;
  overflow: hidden;
  height: 220px;
}

.dash-sidebar {
  width: 48px;
  background: var(--gray-800);
  padding: 12px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.dash-logo {
  font-family: var(--font-en);
  font-size: 0.55rem;
  font-weight: 800;
  color: var(--orange);
  margin-bottom: 8px;
}

.dash-nav-item {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
}

.dash-nav-item.active { background: var(--blue); color: white; }
.dash-nav-item .material-icons-round { font-size: 16px; }

.dash-main { flex: 1; padding: 12px; }

.dash-stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}

.dash-stat {
  padding: 8px;
  border-radius: 8px;
  text-align: center;
}

.dash-stat.blue { background: rgba(37, 99, 235, 0.1); }
.dash-stat.orange { background: rgba(249, 115, 22, 0.1); }
.dash-stat span { display: block; font-family: var(--font-en); font-weight: 700; font-size: 0.9rem; }
.dash-stat small { font-size: 0.55rem; color: var(--gray-400); font-family: var(--font-en); }

.dash-chart {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 80px;
  padding-top: 8px;
}

.dash-chart .bar,
.chart-col,
.chart-bar {
  flex: 1;
  background: linear-gradient(180deg, var(--blue) 0%, var(--blue-light) 100%);
  border-radius: 4px 4px 0 0;
  height: var(--h, 50%);
  min-height: 4px;
  transition: height 1s cubic-bezier(0.4, 0, 0.2, 1);
}

.chart-col.orange,
.chart-bar { background: linear-gradient(180deg, var(--orange) 0%, #FB923C 100%); }

.admin-modules {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-content: center;
}

.module-chip {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  font-size: 0.65rem;
  font-weight: 500;
  border-radius: 8px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.06);
}

.module-chip .material-icons-round { font-size: 14px; color: var(--blue); }

/* ===== Slide 9: Features ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
  flex: 1;
  align-content: center;
}

.feature-card {
  padding: 12px 8px;
  text-align: center;
  transition: transform 0.3s;
}

.feature-card:hover { transform: scale(1.05); }

.feature-card .material-icons-round {
  font-size: 24px;
  color: var(--blue);
  margin-bottom: 4px;
}

.feature-card p {
  font-size: clamp(0.55rem, 0.85vw, 0.7rem);
  font-weight: 500;
  line-height: 1.2;
}

/* ===== Slide 10: Why Us ===== */
.why-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 4%;
  flex: 1;
  align-items: center;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.why-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  font-size: clamp(0.75rem, 1.1vw, 0.9rem);
  font-weight: 500;
  font-family: var(--font-en);
}

.why-item .material-icons-round { color: #22C55E; font-size: 20px; }

/* ===== Slide 11: Pricing ===== */
.pricing-hero { display: flex; justify-content: center; margin: 16px 0; }

.main-price {
  padding: 24px 48px;
  text-align: center;
}

.price-label {
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: var(--gray-600);
  margin-bottom: 8px;
}

.price-amount {
  font-family: var(--font-en);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--blue);
}

.price-amount .currency { font-size: 0.6em; vertical-align: super; }

.price-breakdown {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  flex: 1;
  align-content: center;
}

.breakdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
}

.breakdown-item .material-icons-round { font-size: 28px; color: var(--blue); }
.breakdown-item strong { display: block; font-size: 0.8rem; margin-bottom: 4px; }
.breakdown-item .amount {
  font-family: var(--font-en);
  font-size: 1.2rem;
  font-weight: 700;
}
.breakdown-item .amount.orange { color: var(--orange); }
.breakdown-item .amount.blue { color: var(--blue); }

.breakdown-note {
  text-align: center;
  font-size: 0.85rem;
  color: var(--gray-400);
  margin-top: 8px;
}

/* ===== Slide 12: Timeline ===== */
.timeline {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  flex: 1;
  align-content: center;
}

.timeline-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.timeline-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--orange);
  flex-shrink: 0;
  box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.2);
}

.timeline-card {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  flex: 1;
  font-size: clamp(0.7rem, 1vw, 0.85rem);
  font-weight: 500;
}

.timeline-card .material-icons-round { font-size: 20px; color: var(--blue); }

/* ===== Slide 12: Setup Includes ===== */
.setup-includes-slide .slide-content {
  justify-content: center;
}

.setup-includes-layout {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 4%;
  flex: 1;
  align-items: center;
}

.setup-includes-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.setup-includes-main {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

.setup-includes-main .slide-header {
  margin-bottom: 0;
}

.setup-includes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.setup-include-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  transition: transform 0.3s;
}

.setup-include-item:hover {
  transform: translateY(-3px);
}

.setup-include-item .material-icons-round {
  font-size: 24px;
  color: var(--blue);
  flex-shrink: 0;
}

.setup-include-item p {
  font-size: clamp(0.75rem, 1.1vw, 0.95rem);
  font-weight: 500;
  line-height: 1.3;
  margin: 0;
}

/* ===== Slide 13: Subscription ===== */
.subscription-card {
  max-width: 380px;
  margin: 0 auto;
  padding: 32px;
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.sub-price {
  font-family: var(--font-en);
  font-weight: 800;
  color: var(--blue);
  line-height: 1;
}

.sub-price .currency { font-size: 1.5rem; vertical-align: super; }
.sub-price .big { font-size: clamp(3rem, 6vw, 4.5rem); }

.sub-unit {
  font-family: var(--font-en);
  font-size: 0.9rem;
  color: var(--gray-600);
  margin-top: 8px;
}

.sub-divider {
  height: 1px;
  background: var(--gray-200);
  margin: 20px 0 12px;
}

.sub-note { font-size: 0.85rem; color: var(--gray-400); margin-bottom: 16px; }

.sub-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.split-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 12px;
  text-align: left;
}

.split-item .material-icons-round { font-size: 24px; color: var(--blue); }
.split-item small { display: block; font-size: 0.7rem; color: var(--gray-400); }
.split-item strong { font-family: var(--font-en); font-size: 1.3rem; }
.split-item strong.orange { color: var(--orange); }
.split-item strong.blue { color: var(--blue); }

/* ===== Slide 14: Referral ===== */
.referral-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4%;
  flex: 1;
  align-items: center;
}

.referral-text h2 { margin-bottom: 12px; }
.referral-text p { font-size: clamp(0.8rem, 1.2vw, 0.95rem); color: var(--gray-600); margin-bottom: 12px; }

.referral-highlight {
  padding: 20px;
  text-align: center;
  margin: 16px 0;
}

.ref-amount {
  font-family: var(--font-en);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--orange);
}

.ref-note { font-size: 0.85rem; line-height: 1.5; }

.income-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.flow-node {
  padding: 12px 14px;
  text-align: center;
  min-width: 70px;
}

.flow-node .material-icons-round { font-size: 24px; color: var(--blue); display: block; }
.flow-node small { font-size: 0.6rem; font-family: var(--font-en); }
.flow-node.highlight { border-color: var(--orange); }
.flow-node.orange-glow { box-shadow: 0 0 20px rgba(249, 115, 22, 0.3); }
.flow-node.orange-glow .material-icons-round { color: var(--orange); }

.flow-arrow .material-icons-round { color: var(--orange); font-size: 20px; }

.income-badges {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.badge-pill {
  padding: 6px 16px;
  border-radius: 50px;
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-pill.blue { background: rgba(37, 99, 235, 0.12); color: var(--blue); }
.badge-pill.orange { background: rgba(249, 115, 22, 0.12); color: var(--orange); }

/* ===== Slide 15-16: Calculator ===== */
.calc-card {
  max-width: 500px;
  margin: 0 auto;
  padding: 28px;
  text-align: center;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.calc-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 20px;
}

.calc-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 16px 24px;
  background: rgba(37, 99, 235, 0.06);
  border-radius: 12px;
}

.calc-item .material-icons-round { font-size: 28px; color: var(--blue); }
.calc-item strong { font-size: 0.9rem; }

.calc-operator {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--gray-400);
}

.calc-formula span {
  display: block;
  font-family: var(--font-en);
  font-size: 0.8rem;
  color: var(--gray-400);
  margin-bottom: 8px;
}

.formula {
  font-family: var(--font-en);
  font-size: clamp(1.2rem, 2.5vw, 1.8rem);
  font-weight: 600;
}

.formula .orange { color: var(--orange); font-size: 1.2em; }

.calc-result {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-600);
  margin-top: 8px;
}

.income-chart-mini {
  height: 40px;
  margin-top: 16px;
  display: flex;
  align-items: flex-end;
}

.income-chart-mini .chart-bar { width: 100%; border-radius: 6px 6px 0 0; }

/* ===== Slide 15: Income Example ===== */
.income-example-slide .slide-content {
  justify-content: center;
}

.income-example-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4%;
  flex: 1;
  align-items: center;
}

.income-example-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.income-illustration {
  max-width: 100%;
  width: 100%;
  border-radius: 20px;
  filter: drop-shadow(0 24px 48px rgba(37, 99, 235, 0.18));
}

.income-example-main {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.income-example-main .slide-header {
  margin-bottom: 0;
  text-align: left;
}

.income-example-main .calc-card {
  max-width: none;
  margin: 0;
  padding: 32px 28px;
}

.calc-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 16px;
}

/* ===== Slide 16: Scale ===== */
.scale-calc {
  max-width: 480px;
  margin: 0 auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.scale-step {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 24px;
  width: 100%;
}

.scale-step.highlight { border: 2px solid var(--orange); }

.step-num {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--blue);
  background: rgba(37, 99, 235, 0.1);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.scale-step strong { display: block; font-size: 0.9rem; }
.scale-step small { font-size: 0.75rem; color: var(--gray-400); font-family: var(--font-en); }

.step-result {
  margin-left: auto;
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--blue);
}

.step-result.orange { color: var(--orange); }
.step-result.big { font-size: 1.5rem; }

.scale-arrow { margin: 4px 0; }
.scale-arrow .material-icons-round { color: var(--orange); }

.recurring-tag {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--orange);
}

.growth-graph {
  max-width: 300px;
  margin: 12px auto 0;
}

.line-chart { width: 100%; height: 60px; }

/* ===== Slide 17: Opportunity ===== */
.opportunity-slide .slide-content {
  justify-content: center;
  gap: 18px;
}

.opportunity-header {
  text-align: center;
  flex-shrink: 0;
}

.opportunity-header .lead {
  margin: 8px auto 0;
  max-width: 640px;
  color: var(--gray-600);
  font-size: clamp(0.85rem, 1.2vw, 1rem);
}

.opportunity-tiers {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  flex: 1;
  align-items: stretch;
}

.opp-tier {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px 16px 20px;
  position: relative;
  transition: transform 0.3s, box-shadow 0.3s;
}

.opp-tier:hover {
  transform: translateY(-4px);
}

.opp-tier-featured {
  border: 2px solid rgba(249, 115, 22, 0.35);
  background: linear-gradient(180deg, rgba(255, 247, 237, 0.9) 0%, rgba(255, 255, 255, 0.95) 100%);
  box-shadow: 0 16px 40px rgba(249, 115, 22, 0.12);
}

.opp-tier-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--orange);
  background: rgba(249, 115, 22, 0.12);
  padding: 4px 10px;
  border-radius: 50px;
}

.opp-tier-top {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 6px;
  margin-bottom: 10px;
}

.opp-tier-num {
  font-family: var(--font-en);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  color: var(--blue);
  line-height: 1;
}

.opp-tier-featured .opp-tier-num {
  color: var(--orange);
}

.opp-tier-unit {
  font-size: clamp(0.9rem, 1.2vw, 1.05rem);
  font-weight: 600;
  color: var(--gray-600);
}

.opp-tier-meta {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: clamp(0.72rem, 1vw, 0.85rem);
  color: var(--gray-500);
  margin-bottom: 14px;
}

.opp-tier-meta .material-icons-round {
  font-size: 16px;
  color: var(--blue);
}

.opp-tier-amount {
  font-family: var(--font-en);
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  font-weight: 800;
  margin-bottom: 16px;
}

.opp-tier-bar {
  width: 100%;
  height: 8px;
  background: rgba(37, 99, 235, 0.08);
  border-radius: 50px;
  overflow: hidden;
  margin-top: auto;
}

.opp-tier-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--blue) 0%, var(--blue-light) 100%);
  border-radius: 50px;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.opp-tier-fill.orange {
  background: linear-gradient(90deg, var(--orange) 0%, #FB923C 100%);
}

.slide.active .opp-tier-fill {
  width: var(--w);
}

.opportunity-formula {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px 24px;
  text-align: center;
  flex-shrink: 0;
}

.opportunity-formula .material-icons-round {
  font-size: 28px;
  color: var(--blue);
  flex-shrink: 0;
}

.opportunity-formula p {
  margin: 0;
  font-size: clamp(0.85rem, 1.15vw, 1rem);
  color: var(--gray-600);
  line-height: 1.5;
}

.opportunity-formula strong {
  color: var(--blue);
}

.opportunity-layout {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 18px;
  flex: 1;
  align-items: stretch;
}

.opportunity-table {
  max-width: none;
  margin: 0;
  overflow: hidden;
}

.table-header, .table-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1.5fr;
  padding: 12px 20px;
  font-size: clamp(0.75rem, 1.1vw, 0.9rem);
}

.table-header {
  background: var(--blue);
  color: white;
  font-weight: 600;
  font-family: var(--font-en);
}

.table-row {
  border-bottom: 1px solid var(--gray-100);
  font-family: var(--font-en);
}

.table-row.highlight {
  background: rgba(249, 115, 22, 0.08);
  font-weight: 600;
}

.table-row .orange { color: var(--orange); font-weight: 700; }

/* Slide 17: Opportunity bar chart */
.opportunity-chart-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 18px 18px 14px;
}

.opportunity-chart-header {
  margin-bottom: 10px;
}

.opportunity-chart-header h3 {
  font-size: clamp(1rem, 1.45vw, 1.25rem);
  color: var(--blue);
  margin-bottom: 6px;
}

.opportunity-chart-header p {
  font-size: clamp(0.78rem, 1vw, 0.9rem);
  color: var(--gray-600);
  line-height: 1.5;
}

.opportunity-chart {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  padding: 4px 4px 0;
  height: 220px;
}

.opp-bar-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  max-width: 92px;
  height: 100%;
  justify-content: flex-end;
  gap: 8px;
}

.opp-bar-value {
  font-size: clamp(0.68rem, 0.95vw, 0.82rem);
  font-weight: 700;
  color: var(--blue);
  white-space: nowrap;
  text-align: center;
}

.opp-bar-value.highlight { color: var(--orange); font-size: clamp(0.75rem, 1.1vw, 0.9rem); }

.opp-bar-track {
  width: 100%;
  max-width: 76px;
  height: 142px;
  display: flex;
  align-items: flex-end;
  background: rgba(37, 99, 235, 0.06);
  border-radius: 10px 10px 4px 4px;
  overflow: hidden;
  border: 1px solid rgba(37, 99, 235, 0.1);
}

.opp-bar-fill {
  width: 100%;
  height: 0;
  background: linear-gradient(180deg, var(--blue) 0%, var(--blue-light) 100%);
  border-radius: 8px 8px 0 0;
  min-height: 8px;
  transition: height 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.opp-bar-fill.orange {
  background: linear-gradient(180deg, var(--orange) 0%, #FB923C 100%);
}

.slide.active .opp-bar-fill {
  height: var(--h);
}

.opp-bar-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gray-600);
  text-align: center;
}

.anim-opp-bar {
  opacity: 0;
  animation: fadeUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: calc(0.12s * var(--i, 1) + 0.3s);
  animation-play-state: paused;
}

/* ===== Slide 18: Benefits ===== */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  flex: 1;
  align-content: center;
}

.benefit-card {
  padding: 18px 14px;
  text-align: center;
  transition: transform 0.3s;
}

.benefit-card:hover { transform: translateY(-3px); }
.benefit-card.full-width { grid-column: span 3; }

.benefit-card .material-icons-round {
  font-size: 28px;
  color: var(--orange);
  margin-bottom: 6px;
}

.benefit-card p {
  font-size: clamp(0.75rem, 1.1vw, 0.9rem);
  font-weight: 500;
}

/* ===== Slide 19: Schools ===== */
.schools-layout {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 4%;
  flex: 1;
  align-items: center;
}

.school-svg { width: 100%; max-width: 240px; margin: 0 auto; display: block; }

.schools-illustration {
  width: 100%;
  max-width: 320px;
  height: auto;
  display: block;
  margin: 0 auto;
  filter: drop-shadow(0 16px 32px rgba(37, 99, 235, 0.15));
  object-fit: contain;
}

.check-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: 12px;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: clamp(0.7rem, 1vw, 0.85rem);
  font-family: var(--font-en);
  font-weight: 500;
}

.check-item .material-icons-round { font-size: 18px; color: #22C55E; }

/* ===== Slide 20: Vision ===== */
.slide-content.vision-slide {
  justify-content: center;
  gap: 20px;
}

.vision-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 5%;
  align-items: center;
  flex-shrink: 0;
  width: 100%;
  min-width: 0;
}

.vision-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
}

.vision-target-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  background: transparent;
}

.vision-target-img {
  width: 100%;
  max-width: 340px;
  height: auto;
  display: block;
  mix-blend-mode: screen;
  filter: drop-shadow(0 12px 28px rgba(37, 99, 235, 0.12));
}

.vision-copy {
  text-align: left;
  min-width: 0;
}

.vision-copy h2 {
  margin-bottom: 12px;
}

.vision-main {
  font-size: clamp(1rem, 1.55vw, 1.25rem);
  color: var(--gray-600);
  margin: 0;
  line-height: 1.65;
  font-family: var(--font-bn);
}

.vision-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  width: 100%;
}

.vision-step {
  padding: 20px 16px;
  text-align: center;
  min-width: 0;
  flex: 1 1 140px;
  max-width: 240px;
  box-sizing: border-box;
}

.vision-step .material-icons-round {
  font-size: 32px;
  color: var(--orange);
  margin-bottom: 8px;
}

.vision-step p {
  font-size: clamp(0.75rem, 1.1vw, 0.9rem);
  font-weight: 600;
  color: var(--gray-800);
  font-family: var(--font-bn);
}

.vision-arrow .material-icons-round {
  color: var(--blue);
  opacity: 0.55;
}

/* ===== Slide 21: Grow ===== */
.grow-slide .slide-content {
  justify-content: center;
}

.grow-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 4%;
  flex: 1;
  align-items: center;
}

.grow-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.grow-trophy {
  max-width: 100%;
  width: 100%;
  border-radius: 24px;
  object-fit: cover;
  aspect-ratio: 1;
  filter: drop-shadow(0 24px 48px rgba(37, 99, 235, 0.15));
}

.grow-main {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-width: 0;
}

.grow-main .slide-header {
  margin-bottom: 0;
  text-align: left;
}

.grow-main .slide-header .lead {
  margin-top: 8px;
  color: var(--gray-600);
  font-size: clamp(0.85rem, 1.15vw, 1rem);
  line-height: 1.55;
}

.grow-main .grow-grid {
  grid-template-columns: repeat(2, 1fr);
  flex: 0;
  align-content: start;
}

.grow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  flex: 1;
  align-content: center;
}

.grow-card {
  padding: 24px 16px;
  text-align: center;
  transition: transform 0.3s;
}

.grow-card:hover { transform: translateY(-4px); }

.grow-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
}

.grow-icon.blue { background: rgba(37, 99, 235, 0.12); color: var(--blue); }
.grow-icon.orange { background: rgba(249, 115, 22, 0.12); color: var(--orange); }
.grow-icon .material-icons-round { font-size: 28px; }

.grow-card h3 {
  font-family: var(--font-en);
  margin-bottom: 6px;
}

.grow-card p {
  font-size: clamp(0.75rem, 1.1vw, 0.9rem);
  color: var(--gray-600);
}

/* ===== Slide 22: Thanks ===== */
.thanks-slide .slide-content {
  justify-content: center;
  align-items: center;
}

.thanks-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5%;
  flex: 1;
  align-items: center;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
}

.thanks-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.thanks-img {
  max-width: min(420px, 100%);
  width: 100%;
}

.thanks-main {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.thanks-main h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  color: var(--gray-800);
  font-weight: 700;
  margin: 0;
  line-height: 1.3;
}

.thanks-main .tagline {
  color: var(--blue);
  font-size: clamp(1rem, 1.8vw, 1.35rem);
  font-weight: 600;
  margin: 0;
}

.thanks-main .thanks-brand {
  align-self: flex-start;
  margin-bottom: 0;
}

.thanks-main .contact-row {
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 16px;
}

.thanks-slide .contact-item {
  color: var(--gray-600);
}

.thanks-slide .contact-item .material-icons-round {
  color: var(--blue);
}

.thanks-content {
  text-align: center;
  color: white;
}

.thanks-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.thanks-icon .material-icons-round { font-size: 40px; color: var(--orange); }

.thanks-content h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  color: white;
  margin-bottom: 8px;
}

.thanks-content h2 {
  font-size: clamp(1rem, 2vw, 1.5rem);
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  margin-bottom: 8px;
}

.thanks-content .tagline {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 24px;
}

.thanks-brand {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 32px;
  margin-bottom: 20px;
}

.thanks-brand span { font-size: 0.75rem; color: var(--gray-400); }
.thanks-brand strong {
  font-family: var(--font-en);
  font-size: 1rem;
  color: var(--gray-800);
}

.contact-row {
  display: flex;
  gap: 24px;
  justify-content: center;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-en);
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.7);
}

.contact-item .material-icons-round { font-size: 18px; }

/* ===== Animations ===== */
.slide.active [class*="anim-"] {
  animation-play-state: running;
}

.slide:not(.active) [class*="anim-"] {
  animation: none !important;
  opacity: 0;
  transform: none;
}

.anim-fade-up {
  opacity: 0;
  animation: fadeUp 0.7s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: calc(0.1s * var(--i, 0));
  animation-play-state: paused;
}

.anim-fade-down {
  opacity: 0;
  animation: fadeDown 0.7s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: calc(0.1s * var(--i, 0));
  animation-play-state: paused;
}

.anim-fade-left {
  opacity: 0;
  animation: fadeLeft 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: calc(0.1s * var(--i, 0));
  animation-play-state: paused;
}

.anim-fade-right {
  opacity: 0;
  animation: fadeRight 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: calc(0.1s * var(--i, 0));
  animation-play-state: paused;
}

.anim-slide-left {
  opacity: 0;
  animation: slideLeft 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: calc(0.08s * var(--i, 1));
  animation-play-state: paused;
}

.anim-slide-right {
  opacity: 0;
  animation: slideRight 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: calc(0.1s * var(--i, 1));
  animation-play-state: paused;
}

.anim-scale {
  opacity: 0;
  animation: scaleIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: calc(0.08s * var(--i, 1));
  animation-play-state: paused;
}

.anim-pulse {
  animation: pulse 2s ease-in-out infinite;
  animation-play-state: paused;
}

.anim-grow-bar .bar,
.anim-grow-bar .chart-col,
.anim-grow-bar .chart-bar {
  height: 0 !important;
}

.slide.active .anim-grow-bar .bar,
.slide.active .anim-grow-bar .chart-col,
.slide.active .anim-grow-bar .chart-bar {
  animation: growBar 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  animation-delay: calc(0.15s * var(--i, 1) + 0.3s);
}

.delay-2 { animation-delay: 0.2s !important; }
.delay-3 { animation-delay: 0.4s !important; }
.delay-4 { animation-delay: 0.6s !important; }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeLeft {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeRight {
  from { opacity: 0; transform: translateX(-40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideLeft {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideRight {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.85); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.05); }
}

@keyframes growBar {
  to { height: var(--h, 50%); }
}

/* ===== Navigation ===== */
.nav-controls {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  padding: 8px 16px;
  box-shadow: var(--glass-shadow);
}

.nav-btn {
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
  transition: all 0.2s;
}

.nav-btn:hover {
  background: rgba(37, 99, 235, 0.1);
  color: var(--blue);
}

.nav-btn:active {
  transform: scale(0.96);
}

.slide-counter {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-600);
  min-width: 48px;
  text-align: center;
}

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gray-200);
  z-index: 100;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--blue), var(--orange));
  transition: width 0.4s ease;
  width: calc(100% / 22);
}

.slide-dots {
  position: fixed;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 100;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gray-200);
  border: none;
  cursor: pointer;
  transition: all 0.3s;
  padding: 0;
}

.dot.active {
  background: var(--blue);
  transform: scale(1.3);
  box-shadow: 0 0 8px rgba(37, 99, 235, 0.4);
}

.dot:hover { background: var(--blue-light); }

/* Larger point-style content */
.challenge-card {
  padding: 22px 24px;
  gap: 16px;
}

.challenge-card .material-icons-round {
  font-size: 48px;
}

.challenge-card p {
  font-size: clamp(1.2rem, 1.9vw, 1.5rem);
  line-height: 1.35;
}

.hub-node {
  width: 170px;
  min-height: 118px;
  padding: 18px 14px;
  font-size: 1.2rem;
}

.hub-node .material-icons-round {
  font-size: 46px;
}

.feature-item {
  gap: 12px;
  font-size: clamp(1.1rem, 1.7vw, 1.45rem);
  padding: 14px 18px;
  border-radius: 14px;
}

.feature-item .material-icons-round {
  font-size: 34px;
}

.module-chip {
  font-size: 1.15rem;
  padding: 14px 18px;
  gap: 10px;
  border-radius: 12px;
}

.module-chip .material-icons-round {
  font-size: 30px;
}

.feature-card {
  padding: 22px 14px;
}

.feature-card .material-icons-round {
  font-size: 52px;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: clamp(1rem, 1.45vw, 1.25rem);
  line-height: 1.3;
}

.why-item {
  gap: 12px;
  padding: 24px 24px;
  font-size: clamp(1.15rem, 1.7vw, 1.45rem);
}

.why-item .material-icons-round {
  font-size: 38px;
}

.timeline-card {
  gap: 12px;
  padding: 18px 22px;
  font-size: 1.2rem;
}

.timeline-card .material-icons-round {
  font-size: 34px;
}

.benefit-card {
  padding: 28px 22px;
}

.benefit-card .material-icons-round {
  font-size: 52px;
  margin-bottom: 12px;
}

.benefit-card p {
  font-size: clamp(1.1rem, 1.6vw, 1.4rem);
  line-height: 1.35;
}

.check-item {
  gap: 10px;
  font-size: clamp(1.05rem, 1.55vw, 1.3rem);
}

.check-item .material-icons-round {
  font-size: 32px;
}

.grow-card {
  padding: 36px 24px;
}

.grow-card h3 {
  font-size: clamp(1.1rem, 1.55vw, 1.35rem);
}

.grow-card p {
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  line-height: 1.4;
}

.opp-bar-value {
  font-size: clamp(0.9rem, 1.2vw, 1.05rem);
}

.opp-bar-value.highlight {
  font-size: clamp(1rem, 1.35vw, 1.15rem);
}

.opp-bar-label {
  font-size: 1rem;
}

/* ===== Desktop: larger points on key slides (5,6,7,8,10,12,14,16,19) ===== */
@media (min-width: 901px) {
  .slide-points-lg .section-label {
    font-size: 0.9rem;
    padding: 8px 18px;
  }

  .slide-points-lg h2 {
    font-size: clamp(1.85rem, 3.4vw, 2.75rem);
    margin-bottom: 14px;
  }

  .slide-points-lg .feature-list {
    gap: 10px;
  }

  .slide-points-lg .feature-list.cols-2 {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .slide[data-slide="5"] .feature-item,
  .slide[data-slide="6"] .feature-item,
  .slide[data-slide="7"] .feature-item {
    font-size: clamp(1.3rem, 1.9vw, 1.75rem);
    padding: 18px 22px;
    gap: 16px;
    border-radius: 16px;
  }

  .slide[data-slide="5"] .feature-item .material-icons-round,
  .slide[data-slide="6"] .feature-item .material-icons-round,
  .slide[data-slide="7"] .feature-item .material-icons-round {
    font-size: 42px;
  }

  .slide[data-slide="5"] .phone-frame,
  .slide[data-slide="6"] .phone-frame,
  .slide[data-slide="7"] .phone-frame {
    width: clamp(260px, 28vw, 340px);
  }

  .slide[data-slide="5"] .app-slide,
  .slide[data-slide="6"] .app-slide,
  .slide[data-slide="7"] .app-slide {
    gap: 5%;
    align-items: center;
  }

  .slide[data-slide="8"] .admin-layout {
    grid-template-columns: 1.18fr 0.82fr;
    gap: 24px;
    align-items: stretch;
    flex: 1;
    min-height: 0;
  }

  .slide[data-slide="8"] .admin-preview-col .browser-mockup.dashboard-mockup {
    height: 100%;
    min-height: min(50vh, 500px);
  }

  .slide[data-slide="8"] .admin-modules-col .admin-modules {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    align-content: start;
  }

  .slide[data-slide="8"] .admin-modules-title {
    font-size: clamp(1rem, 1.35vw, 1.15rem);
    margin-bottom: 14px;
  }

  .slide[data-slide="8"] .module-chip {
    font-size: clamp(1.15rem, 1.5vw, 1.4rem);
    padding: 18px 20px;
    gap: 12px;
    border-radius: 14px;
  }

  .slide[data-slide="8"] .module-chip .material-icons-round {
    font-size: 34px;
  }

  .slide[data-slide="10"] .why-layout {
    grid-template-columns: 0.75fr 1.25fr;
    gap: 5%;
  }

  .slide[data-slide="10"] .why-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }

  .slide[data-slide="10"] .why-item {
    font-size: clamp(1.25rem, 1.85vw, 1.65rem);
    padding: 22px 24px;
    gap: 14px;
    font-family: var(--font-bn);
  }

  .slide[data-slide="10"] .why-item .material-icons-round {
    font-size: 42px;
  }

  .slide[data-slide="10"] .why-text .vector-illustration.sm,
  .slide[data-slide="10"] .why-qmark {
    max-width: 180px;
    max-height: 180px;
    margin-top: 16px;
    display: block;
  }

  .why-qmark-char {
    font-family: var(--font-en);
  }

  .slide[data-slide="12"] .setup-includes-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }

  .slide[data-slide="12"] .setup-include-item {
    padding: 20px 22px;
    gap: 14px;
  }

  .slide[data-slide="12"] .setup-include-item p {
    font-size: clamp(1.15rem, 1.6vw, 1.45rem);
  }

  .slide[data-slide="12"] .setup-include-item .material-icons-round {
    font-size: 38px;
  }

  .slide[data-slide="12"] .slide-illustration {
    max-width: 340px;
  }

  .slide[data-slide="15"] .income-example-layout {
    grid-template-columns: 1fr 1fr;
    gap: 4%;
  }

  .slide[data-slide="15"] .calc-item strong {
    font-size: clamp(1rem, 1.4vw, 1.2rem);
  }

  .slide[data-slide="15"] .formula {
    font-size: clamp(1.5rem, 2.8vw, 2rem);
  }

  .slide[data-slide="15"] .calc-result {
    font-size: clamp(1.1rem, 1.5vw, 1.3rem);
  }

  .slide[data-slide="17"] .opp-tier {
    padding: 28px 18px 22px;
  }

  .slide[data-slide="17"] .opp-tier-num {
    font-size: clamp(2.4rem, 3.8vw, 3.2rem);
  }

  .slide[data-slide="17"] .opp-tier-amount {
    font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  }

  .slide[data-slide="17"] .opp-tier-meta {
    font-size: clamp(0.85rem, 1.15vw, 1rem);
  }

  .slide[data-slide="17"] .opportunity-formula p {
    font-size: clamp(0.95rem, 1.25vw, 1.1rem);
  }

  .slide[data-slide="14"] .referral-text h2 {
    font-size: clamp(1.85rem, 3.2vw, 2.6rem);
  }

  .slide[data-slide="14"] .referral-text p,
  .slide[data-slide="14"] .ref-note {
    font-size: clamp(1rem, 1.4vw, 1.2rem);
  }

  .slide[data-slide="14"] .ref-amount {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
  }

  .slide[data-slide="14"] .flow-node {
    padding: 18px 22px;
    min-width: 100px;
  }

  .slide[data-slide="14"] .flow-node .material-icons-round {
    font-size: 36px;
  }

  .slide[data-slide="14"] .flow-node small {
    font-size: 0.95rem;
  }

  .slide[data-slide="14"] .badge-pill {
    font-size: 1rem;
    padding: 10px 18px;
  }

  .slide[data-slide="16"] .scale-step {
    padding: 28px 32px;
    font-size: 1.15rem;
  }

  .slide[data-slide="16"] .scale-step strong {
    font-size: clamp(1.2rem, 1.8vw, 1.55rem);
  }

  .slide[data-slide="16"] .scale-step .step-result {
    font-size: clamp(1.4rem, 2.2vw, 1.9rem);
  }

  .slide[data-slide="16"] .step-num {
    font-size: 1.1rem;
  }

  .slide[data-slide="16"] .recurring-tag {
    font-size: 1.05rem;
  }

  .slide[data-slide="16"] .growth-graph {
    max-height: 100px;
  }

  .slide[data-slide="19"] .schools-layout {
    grid-template-columns: 0.55fr 1.45fr;
    gap: 5%;
  }

  .slide[data-slide="19"] .schools-illustration {
    max-width: 340px;
  }

  .slide[data-slide="19"] .schools-visual {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .slide[data-slide="19"] .check-list {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 16px;
  }

  .slide[data-slide="19"] .check-item {
    font-size: clamp(1.2rem, 1.75vw, 1.55rem);
    gap: 12px;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 12px;
    font-family: var(--font-bn);
  }

  .slide[data-slide="19"] .check-item .material-icons-round {
    font-size: 36px;
  }
}

/* ===== Print / Export ===== */
@media print {
  body { overflow: visible; background: white; }
  .nav-controls, .progress-bar, .slide-dots { display: none !important; }

  .presentation {
    display: block;
    width: 100%;
    height: auto;
  }

  .slide {
    position: relative;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    width: 100%;
    max-width: none;
    aspect-ratio: 16/9;
    page-break-after: always;
    break-after: page;
    margin-bottom: 0;
    box-shadow: none;
    border: 1px solid #eee;
  }

  .slide:not(.active) [class*="anim-"],
  .slide.active [class*="anim-"] {
    opacity: 1 !important;
    animation: none !important;
    transform: none !important;
  }

  .anim-grow-bar .bar,
  .anim-grow-bar .chart-col,
  .anim-grow-bar .chart-bar {
    height: var(--h, 50%) !important;
  }
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .challenge-grid { grid-template-columns: repeat(2, 1fr); }
  .ecosystem-flow { grid-template-columns: repeat(2, 1fr); }
  .ecosystem-layout { grid-template-columns: 1fr; }
  .ecosystem-apps { grid-template-columns: repeat(2, 1fr); }
  .features-layout { grid-template-columns: 1fr; }
  .features-main .features-grid { grid-template-columns: repeat(3, 1fr); }
  .setup-layout { grid-template-columns: 1fr; }
  .subscription-layout { grid-template-columns: 1fr; }
  .setup-includes-layout { grid-template-columns: 1fr; }
  .setup-includes-grid { grid-template-columns: repeat(2, 1fr); }
  .income-example-layout { grid-template-columns: 1fr; }
  .opportunity-tiers { grid-template-columns: repeat(2, 1fr); }
  .grow-layout { grid-template-columns: 1fr; }
  .thanks-layout { grid-template-columns: 1fr; }
  .app-slide { grid-template-columns: 1fr; }
  .app-slide.reverse { direction: ltr; }
  .phone-mockup { display: none; }
  .admin-layout { grid-template-columns: 1fr; }
  .why-layout { grid-template-columns: 1fr; }
  .price-breakdown { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: repeat(2, 1fr); }
  .referral-layout { grid-template-columns: 1fr; }
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .benefit-card.full-width { grid-column: span 2; }
  .schools-layout { grid-template-columns: 1fr; }
  .vision-layout { grid-template-columns: 1fr; }
  .schools-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    max-height: none;
  }

  .schools-illustration {
    max-width: min(280px, 70vw);
  }
  .grow-grid { grid-template-columns: repeat(2, 1fr); }
  .slide-dots { display: none; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .vision-copy { text-align: center; }
  .vision-target-img { max-width: min(240px, 55vw); margin: 0 auto; }
  .vision-steps { flex-direction: column; width: 100%; gap: 8px; }
  .vision-step { max-width: none; width: 100%; flex: none; }
  .vision-arrow { transform: rotate(90deg); }
}

/* ===== ENHANCED: Larger Graphics & Interactivity ===== */

h1, h2, h3 { font-family: var(--font-bn); }
h1 { font-size: clamp(2rem, 4.2vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.6rem); }
h3 { font-size: clamp(1rem, 1.8vw, 1.3rem); }

.section-label {
  font-family: var(--font-bn);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: none;
  padding: 6px 16px;
}

.slide-content { padding: 3.5% 4.5%; }

/* Vector illustrations */
.vector-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.vector-illustration {
  width: 100%;
  max-width: 480px;
  max-height: min(42vh, 400px);
  filter: drop-shadow(0 12px 24px rgba(37, 99, 235, 0.15));
}

.vector-illustration.lg { max-width: 520px; max-height: min(48vh, 440px); }
.vector-illustration.sm { max-width: 200px; max-height: 200px; }

.anim-float { animation: floatY 4s ease-in-out infinite; }
.anim-float-slow { animation: floatY 6s ease-in-out infinite; }
.anim-spin-slow { animation: spinSlow 20s linear infinite; }

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

@keyframes spinSlow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes drawPath {
  to { stroke-dashoffset: 0; }
}

@keyframes svgPop {
  from { opacity: 0; transform: scale(0.5); }
  to { opacity: 1; transform: scale(1); }
}

.svg-draw {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
}

/* Hero */
.hero-grid { grid-template-columns: 1fr 1.1fr; }
.hero-grid-single {
  grid-template-columns: 1fr;
  max-width: 720px;
}
.hero-grid-single .hero-text {
  text-align: left;
  max-width: 640px;
}
.hero-grid-single .platform-badges {
  justify-content: flex-start;
}
.hero-visual svg, .hero-visual .vector-illustration,
.hero-visual .hero-illustration {
  max-height: min(50vh, 420px);
  width: 110%;
  margin-left: -5%;
}

.slide[data-slide="1"] .hero-illustration {
  max-width: min(440px, 100%);
  width: 100%;
  margin-left: 0;
}

.badge, .glass-pill {
  font-family: var(--font-bn);
  font-size: 0.85rem;
  padding: 10px 18px;
}

.glass-pill .material-icons-round { font-size: 22px; }

.tagline { font-size: clamp(1.2rem, 2.4vw, 1.8rem); }
.subtitle { font-size: clamp(0.9rem, 1.5vw, 1.1rem); }

/* Challenge slide with side art */
.challenge-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 3%;
  flex: 1;
  align-items: center;
}

.challenge-art {
  display: flex;
  align-items: center;
  justify-content: center;
}

.challenge-art .slide-illustration {
  max-width: 360px;
}

.challenge-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }

.challenge-card {
  padding: 16px 18px;
  gap: 12px;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}

.challenge-card .material-icons-round { font-size: 32px; }
.challenge-card p { font-size: clamp(0.85rem, 1.3vw, 1rem); }

.challenge-card:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 16px 40px rgba(239, 68, 68, 0.15);
}

/* Hub - grid layout (slide 3 fix) */
.ecosystem-hub {
  max-width: 620px;
  height: min(42vh, 360px);
  min-height: 280px;
}

@media (max-width: 900px) {
  .ecosystem-hub {
    max-width: 100%;
    height: auto;
    min-height: 300px;
  }
  .hub-node { width: 110px; min-height: 80px; font-size: 0.8rem; }
  .hub-center { width: 120px; height: 120px; }
  .hub-center .material-icons-round { font-size: 36px; }
}

/* Ecosystem cards */
.app-card { padding: 28px 18px; }
.app-icon { width: 72px; height: 72px; border-radius: 20px; }
.app-icon .material-icons-round { font-size: 38px; }
.tech-tags span { font-size: 0.75rem; padding: 4px 12px; }

.cloud-banner {
  padding: 18px 32px;
  font-size: 1.05rem;
  gap: 14px;
}

.cloud-banner .material-icons-round { font-size: 36px; }

/* Phone mockups - much bigger */
.phone-frame {
  width: clamp(200px, 24vw, 280px);
  border-radius: 36px;
  padding: 10px;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.25);
}

.phone-screen { border-radius: 28px; }
.screen-header { padding: 16px; font-size: 0.85rem; font-family: var(--font-bn); }
.screen-tile { padding: 14px 6px; }
.screen-tile .material-icons-round { font-size: 28px; }
.screen-tile small { font-size: 0.65rem; font-family: var(--font-bn); }
.list-item { font-size: 0.75rem; font-family: var(--font-bn); padding: 12px; }
.list-item .material-icons-round { font-size: 22px; }

.feature-item {
  font-size: clamp(0.85rem, 1.3vw, 1rem);
  padding: 10px 14px;
  transition: transform 0.2s, background 0.2s;
}

.feature-item:hover {
  transform: translateX(6px);
  background: rgba(37, 99, 235, 0.08);
}

.feature-item .material-icons-round { font-size: 26px; }

/* Admin dashboard larger */
.dashboard-mockup { height: min(36vh, 320px); min-height: 280px; }
.browser-mockup.dashboard-mockup {
  height: min(42vh, 380px);
  min-height: 300px;
}
.slide[data-slide="8"] .browser-mockup.dashboard-mockup {
  height: min(50vh, 500px);
  min-height: 320px;
}
.dash-sidebar { width: 64px; }
.dash-nav-item { width: 44px; height: 44px; }
.dash-nav-item .material-icons-round { font-size: 22px; }
.dash-stat span { font-size: 1.2rem; }
.dash-stat small { font-size: 0.7rem; font-family: var(--font-bn); }
.dash-chart { height: 120px; }
.dash-chart .bar { min-width: 24px; }

.module-chip {
  font-size: 0.8rem;
  padding: 10px 14px;
  gap: 8px;
  cursor: pointer;
  transition: transform 0.2s, background 0.2s;
}

.module-chip .material-icons-round { font-size: 22px; }
.module-chip:hover { transform: scale(1.05); background: rgba(37, 99, 235, 0.1); }

/* Features grid */
.features-grid { grid-template-columns: repeat(7, 1fr); gap: 10px; }
.feature-card { padding: 16px 10px; cursor: pointer; }
.feature-card .material-icons-round { font-size: 36px; margin-bottom: 8px; }
.feature-card p { font-size: clamp(0.7rem, 1vw, 0.85rem); }

/* Why items */
.why-item {
  padding: 18px 20px;
  font-size: clamp(0.9rem, 1.3vw, 1.05rem);
  font-family: var(--font-bn);
}

.why-item .material-icons-round { font-size: 28px; }

/* Pricing */
.price-amount { font-size: clamp(2.5rem, 5vw, 4rem); }
.main-price { padding: 32px 56px; }
.breakdown-item { padding: 22px; }
.breakdown-item .material-icons-round { font-size: 40px; }
.breakdown-item .amount { font-size: 1.6rem; }

.sub-price .big { font-size: clamp(3.5rem, 7vw, 5.5rem); }
.subscription-card { max-width: 460px; padding: 40px; }
.split-item { padding: 18px; }
.split-item .material-icons-round { font-size: 32px; }
.split-item strong { font-size: 1.6rem; }

/* Referral flow */
.flow-node {
  min-width: 100px;
  padding: 18px 16px;
  cursor: pointer;
  transition: transform 0.3s;
}

.flow-node .material-icons-round { font-size: 36px; }
.flow-node small { font-size: 0.8rem; font-family: var(--font-bn); }
.flow-node:hover { transform: scale(1.1); }
.flow-arrow .material-icons-round { font-size: 32px; }

.ref-amount { font-size: clamp(2.5rem, 5vw, 4rem); }

/* Calculator */
.calc-item .material-icons-round { font-size: 40px; }
.calc-item { padding: 20px 28px; }
.formula { font-size: clamp(1.5rem, 3vw, 2.2rem); }

.scale-step { padding: 22px 28px; }
.step-result.big { font-size: 2rem; }

.opportunity-table { max-width: 640px; }
.table-header, .table-row { padding: 16px 24px; font-size: 1rem; }

/* Benefits */
.benefit-card { padding: 24px 18px; }
.benefit-card .material-icons-round { font-size: 40px; margin-bottom: 10px; }
.benefit-card p { font-size: clamp(0.9rem, 1.3vw, 1.05rem); }

/* Schools visual */
.school-svg { max-width: 340px; width: 100%; }
.check-item { font-size: clamp(0.85rem, 1.2vw, 1rem); font-family: var(--font-bn); }
.check-item .material-icons-round { font-size: 24px; }

/* Vision — desktop sizing only */
@media (min-width: 901px) {
  .vision-step { padding: 28px 22px; min-width: 180px; }
  .vision-step .material-icons-round { font-size: 44px; }
  .vision-step p { font-size: 1rem; }
  .vision-arrow .material-icons-round { font-size: 36px; }

  .slide[data-slide="20"] .vision-layout {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 4%;
  }

  .slide[data-slide="20"] .vision-target-img {
    max-width: 380px;
  }

  .slide[data-slide="20"] .vision-main {
    font-size: clamp(1.1rem, 1.7vw, 1.35rem);
  }

  .slide[data-slide="20"] .vision-step {
    padding: 24px 20px;
    min-width: 170px;
  }

  .slide[data-slide="20"] .vision-step p {
    font-size: clamp(0.95rem, 1.3vw, 1.15rem);
  }
}

.slide[data-slide="2"] .slide-illustration { max-width: 380px; }
.slide[data-slide="4"] .slide-illustration { max-width: 400px; }
.slide[data-slide="9"] .slide-illustration { max-width: 280px; }
.slide[data-slide="11"] .slide-illustration { max-width: 340px; }
.slide[data-slide="13"] .slide-illustration { max-width: 380px; }

.slide[data-slide="4"] .ecosystem-apps .app-card { padding: 22px 14px; }
.slide[data-slide="11"] .main-price { padding: 28px 40px; }
.slide[data-slide="13"] .subscription-card { padding: 36px 32px; }

.slide[data-slide="13"] .subscription-card { padding: 36px 32px; }

.slide[data-slide="21"] .grow-trophy {
  max-width: 380px;
}

.slide[data-slide="21"] .grow-card {
  padding: 24px 18px;
}

.slide[data-slide="21"] .grow-card h3 {
  font-family: var(--font-bn);
  font-size: clamp(1rem, 1.35vw, 1.15rem);
}

.slide[data-slide="21"] .grow-card p {
  font-size: clamp(0.85rem, 1.15vw, 1rem);
}

.slide[data-slide="22"] .thanks-img {
  max-width: 440px;
}

.slide[data-slide="22"] .thanks-main h2 {
  font-size: clamp(1.6rem, 2.8vw, 2.2rem);
}

/* Grow cards */
.grow-icon { width: 72px; height: 72px; }
.grow-icon .material-icons-round { font-size: 38px; }
.grow-card { padding: 32px 20px; }
.grow-card h3 { font-family: var(--font-bn); }

/* Thanks */
.thanks-icon { width: 96px; height: 96px; }
.thanks-icon .material-icons-round { font-size: 52px; }
.thanks-content h1 { font-size: clamp(3rem, 6vw, 5rem); }

/* Interactive */
.interactive-card {
  position: relative;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.3s;
  cursor: pointer;
}

.interactive-card:hover {
  box-shadow: 0 20px 50px rgba(37, 99, 235, 0.18);
}

.ripple {
  position: absolute;
  width: 20px;
  height: 20px;
  background: rgba(37, 99, 235, 0.25);
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0);
  animation: rippleEffect 0.6s ease-out;
  pointer-events: none;
}

@keyframes rippleEffect {
  to { transform: translate(-50%, -50%) scale(20); opacity: 0; }
}

/* Slide 2 side illustration */
.slide-art-bg {
  position: absolute;
  right: -5%;
  bottom: -5%;
  width: 45%;
  opacity: 0.9;
  pointer-events: none;
  z-index: 0;
}

/* Parent stats bigger */
.parent-card .material-icons-round { font-size: 32px; }
.parent-card strong { font-size: 0.8rem; }
.parent-stats strong { font-size: 1rem; }

.parent-stats small { font-size: 0.6rem; font-family: var(--font-bn); }

/* Timeline */
.timeline-card { padding: 14px 18px; font-size: 0.95rem; }
.timeline-card .material-icons-round { font-size: 28px; }
.timeline-dot { width: 14px; height: 14px; }

/* Income chart line animated */
.line-chart polyline {
  stroke-dasharray: 500;
  stroke-dashoffset: 500;
}

.slide.active .line-chart polyline {
  animation: drawLine 2s ease forwards 0.5s;
}

@keyframes drawLine {
  to { stroke-dashoffset: 0; }
}

/* ===== Slide Sync ===== */
.sync-hero-panel {
  position: absolute;
  right: 24px;
  bottom: 24px;
  width: min(380px, calc(100% - 48px));
  padding: 14px 16px;
  z-index: 5;
  border: 1px solid rgba(37, 99, 235, 0.15);
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
}

.sync-hero-panel:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.18);
}

.sync-hero-panel:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.sync-expand-hint {
  margin-left: auto;
  font-size: 20px !important;
  color: var(--blue);
  opacity: 0.7;
}

.sync-hero-header {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 12px;
}

.sync-hero-header .material-icons-round {
  font-size: 28px;
  color: var(--primary);
}

.sync-hero-header strong {
  display: block;
  font-family: var(--font-bn);
  font-size: 0.95rem;
  color: var(--text-dark);
}

.sync-hero-header small {
  display: block;
  font-family: var(--font-bn);
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.35;
  margin-top: 2px;
}

.sync-hero-body {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

#qrCanvas,
.sync-qr-image {
  border-radius: 10px;
  background: #fff;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.12);
  display: block;
  object-fit: contain;
}

.sync-hero-meta {
  min-width: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sync-session-label {
  font-family: var(--font-bn);
  font-size: 0.65rem;
  color: var(--text-muted);
  margin: 0;
}

.sync-session-id {
  font-family: var(--font-en);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--primary);
  margin: 0 0 2px;
}

.sync-viewer-count {
  font-family: var(--font-bn);
  font-size: 0.78rem;
  color: var(--accent);
  margin: 2px 0 0;
  font-weight: 600;
  line-height: 1.3;
}

.sync-lan-ip {
  font-family: var(--font-en);
  font-size: 0.68rem;
  font-weight: 600;
  color: #B45309;
  margin: 0;
  line-height: 1.4;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.sync-bar {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: 999px;
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.08);
  z-index: 1000;
  font-family: var(--font-bn);
  font-size: 0.75rem;
  color: var(--text-muted);
  pointer-events: none;
}

.sync-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #94A3B8;
  flex-shrink: 0;
}

.sync-dot.online { background: #22C55E; box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2); }
.sync-dot.connecting { background: #F59E0B; animation: syncPulse 1.2s ease infinite; }
.sync-dot.offline { background: #EF4444; }

@keyframes syncPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

.sync-viewers-mini {
  color: var(--primary);
  font-weight: 600;
  margin-left: 4px;
}

.sync-viewer-follow {
  display: none;
  align-items: center;
  gap: 4px;
  font-weight: 500;
}

.sync-viewer-follow .material-icons-round {
  font-size: 13px;
}

.sync-viewer-follow::before {
  content: '·';
  margin-right: 2px;
  opacity: 0.6;
}

.viewer-banner {
  display: none;
}

/* Viewer lock — presenter-only navigation */
body.mode-viewer .nav-controls,
body.viewer-locked .nav-controls {
  opacity: 0.35;
  pointer-events: none;
}

body.mode-viewer .slide-dots,
body.viewer-locked .slide-dots {
  pointer-events: none;
  opacity: 0.5;
}

body.mode-viewer .sync-hero-panel {
  display: none !important;
}

body.mode-viewer .presentation {
  cursor: default;
}

body.mode-viewer .sync-bar {
  top: auto;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.62rem;
  padding: 4px 10px;
  gap: 5px;
  max-width: calc(100% - 20px);
  white-space: nowrap;
  background: rgba(37, 99, 235, 0.88);
  color: rgba(255, 255, 255, 0.95);
  border-color: rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.25);
}

body.mode-viewer .sync-status-text {
  color: rgba(255, 255, 255, 0.95);
}

body.mode-viewer .sync-viewer-follow {
  display: inline-flex;
  color: rgba(255, 255, 255, 0.95);
  font-size: 0.62rem;
}

body.mode-viewer .sync-viewers-mini {
  display: none;
}

body.mode-viewer .sync-dot.online {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.35);
}

@media (max-width: 900px) {
  .sync-hero-panel {
    position: relative;
    right: auto;
    bottom: auto;
    width: 100%;
    margin-top: 16px;
  }

  .sync-bar {
    top: auto;
    bottom: 58px;
    font-size: 0.68rem;
    padding: 6px 12px;
    max-width: calc(100% - 24px);
  }

  body.mode-viewer .sync-bar {
    bottom: 8px;
    font-size: 0.58rem;
    padding: 4px 8px;
  }

  body.mode-viewer .sync-viewer-follow {
    font-size: 0.58rem;
  }

  body.mode-viewer .sync-viewer-follow .material-icons-round {
    font-size: 12px;
  }

  body.mode-viewer .nav-controls {
    display: none;
  }
}

/* Responsive - keep phones visible on medium screens */
@media (max-width: 900px) {
  .challenge-layout { grid-template-columns: 1fr; }
  .challenge-art { max-height: none; overflow: visible; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { display: flex; max-height: 220px; margin-top: 12px; }
  .hero-visual .vector-illustration { max-height: 200px; width: 80%; margin: 0 auto; }
  .phone-mockup { display: flex; }
  .phone-frame { width: 180px; }
  .features-grid { grid-template-columns: repeat(3, 1fr); }
  .vector-illustration { max-height: 200px; }
  .opportunity-layout { grid-template-columns: 1fr; }
  .opportunity-chart { height: 180px; }
  .opp-bar-track { height: 118px; max-width: 62px; }
}

/* ===== QR Fullscreen Overlay ===== */
.qr-fullscreen {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

.qr-fullscreen.open {
  opacity: 1;
  visibility: visible;
}

.qr-fullscreen-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.88);
  backdrop-filter: blur(8px);
}

.qr-fullscreen-card {
  position: relative;
  z-index: 1;
  background: #fff;
  border-radius: 24px;
  padding: 32px 28px 28px;
  max-width: min(92vw, 520px);
  width: 100%;
  text-align: center;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}

.qr-fullscreen-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: var(--gray-100);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray-600);
}

.qr-fullscreen-close:hover {
  background: var(--gray-200);
}

.qr-fullscreen-title {
  font-family: var(--font-bn);
  font-size: clamp(1.2rem, 4vw, 1.6rem);
  color: var(--gray-800);
  margin-bottom: 6px;
}

.qr-fullscreen-sub {
  font-family: var(--font-bn);
  font-size: 0.85rem;
  color: var(--gray-600);
  margin-bottom: 20px;
}

.qr-fullscreen-image {
  width: min(72vw, 72vh, 420px);
  height: auto;
  display: block;
  margin: 0 auto 16px;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.15);
}

.qr-fullscreen-session {
  font-family: var(--font-en);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--blue);
  margin-bottom: 4px;
}

.qr-fullscreen-lan {
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: #B45309;
  font-weight: 600;
  margin-bottom: 8px;
  word-break: break-all;
}

.qr-fullscreen-viewers {
  font-family: var(--font-bn);
  font-size: 0.9rem;
  color: var(--orange);
  font-weight: 600;
}

body.qr-fs-open {
  overflow: hidden;
}

/* ===== Mobile & Portrait: scrollable slides ===== */
@media (max-width: 900px), (orientation: portrait) and (max-width: 1100px) {
  .presentation {
    align-items: stretch;
    justify-content: flex-start;
  }

  .slide {
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    max-width: none;
    aspect-ratio: unset;
    border-radius: 0;
    overflow: hidden;
    transform: none !important;
  }

  .slide.active {
    transform: none !important;
  }

  .slide-content {
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    padding: 16px 14px 100px;
    justify-content: flex-start;
    height: 100%;
  }

  h1 { font-size: clamp(1.5rem, 6vw, 2rem); }
  h2 { font-size: clamp(1.25rem, 5vw, 1.75rem); }
  h3 { font-size: clamp(1rem, 4vw, 1.2rem); }

  .slide-header { margin-bottom: 12px; }
  .slide-header.center { text-align: center; }

  .hero-grid,
  .challenge-layout,
  .app-slide,
  .admin-layout,
  .why-layout,
  .referral-layout,
  .schools-layout,
  .opportunity-layout,
  .price-breakdown,
  .ecosystem-layout,
  .features-layout,
  .setup-layout,
  .subscription-layout,
  .setup-includes-layout,
  .income-example-layout,
  .grow-layout,
  .thanks-layout,
  .vision-layout {
    grid-template-columns: 1fr !important;
    gap: 14px;
  }

  .hero-visual {
    display: flex;
    max-height: none;
    margin-top: 8px;
  }

  .hero-visual .vector-illustration,
  .hero-visual .hero-illustration {
    max-height: none;
    max-width: min(260px, 70vw);
    width: 100%;
    margin: 0 auto;
  }

  .vector-illustration,
  .vector-illustration.lg {
    max-height: 160px;
    width: 100%;
    margin: 0 auto;
  }

  .platform-badges {
    flex-wrap: wrap;
    gap: 8px;
  }

  .glass-pill {
    font-size: 0.75rem;
    padding: 8px 12px;
  }

  .challenge-grid,
  .features-grid,
  .why-grid,
  .grow-grid,
  .benefits-grid,
  .ecosystem-flow,
  .ecosystem-apps,
  .setup-includes-grid,
  .opportunity-tiers,
  .admin-modules,
  .module-grid {
    grid-template-columns: 1fr !important;
    gap: 8px;
  }

  .features-main .features-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  .setup-includes-grid {
    grid-template-columns: 1fr !important;
  }

  .opportunity-tiers {
    grid-template-columns: 1fr !important;
  }

  .opp-tier {
    padding: 18px 16px;
  }

  .opportunity-formula {
    flex-direction: column;
    gap: 8px;
    padding: 14px 16px;
  }

  .setup-includes-visual .slide-illustration {
    max-width: min(220px, 50vw) !important;
  }

  .income-example-main .slide-header {
    text-align: center;
  }

  .income-illustration {
    max-width: min(320px, 85vw) !important;
    margin: 0 auto;
  }

  .grow-main .slide-header {
    text-align: center;
  }

  .grow-trophy {
    max-width: min(260px, 70vw) !important;
    margin: 0 auto;
    aspect-ratio: auto;
  }

  .thanks-main {
    text-align: center;
    align-items: center;
  }

  .thanks-main .thanks-brand {
    align-self: center;
  }

  .thanks-main .contact-row {
    justify-content: center;
  }

  .thanks-img {
    max-width: min(280px, 75vw) !important;
    margin: 0 auto;
  }

  .setup-main .pricing-hero {
    justify-content: center;
  }

  .subscription-main .subscription-card {
    max-width: 100%;
  }

  .slide-illustration {
    max-width: min(240px, 55vw) !important;
  }

  .price-tag-wrap .slide-illustration {
    max-width: min(220px, 50vw) !important;
  }

  .slide[data-slide="5"] .feature-list.cols-2,
  .slide[data-slide="6"] .feature-list.cols-2,
  .slide[data-slide="7"] .feature-list.cols-2 {
    grid-template-columns: 1fr 1fr !important;
  }

  .challenge-card,
  .feature-card,
  .why-item,
  .benefit-card,
  .grow-card,
  .hub-node,
  .timeline-card {
    padding: 12px 14px;
    font-size: 0.95rem;
  }

  .feature-item {
    font-size: 0.95rem;
    padding: 10px 12px;
  }

  .module-chip {
    font-size: 0.9rem;
    padding: 10px 12px;
  }

  .ecosystem-hub {
    min-height: auto;
    padding: 8px 0;
  }

  .hub-grid { gap: 8px; }
  .hub-lines { display: none; }

  .challenge-art,
  .slide-art-bg {
    max-height: none;
    overflow: visible;
  }

  .challenge-art .slide-illustration,
  .ecosystem-visual .slide-illustration,
  .features-visual .slide-illustration,
  .setup-visual .slide-illustration,
  .subscription-visual .slide-illustration,
  .setup-includes-visual .slide-illustration,
  .income-example-visual .slide-illustration,
  .grow-visual .slide-illustration,
  .thanks-visual .slide-illustration {
    margin: 0 auto;
  }

  .slide-art-bg {
    max-height: 120px;
    overflow: hidden;
  }

  .slide[data-slide="19"] .schools-visual {
    max-height: none;
    overflow: visible;
  }

  .phone-mockup {
    display: flex;
    justify-content: center;
  }

  .phone-frame {
    width: min(220px, 42vw);
  }

  .browser-mockup.dashboard-mockup {
    height: auto;
    min-height: 200px;
    max-height: 280px;
  }

  .slide[data-slide="8"] .admin-preview-col .browser-mockup.dashboard-mockup {
    min-height: 220px;
    max-height: 320px;
  }

  .slide[data-slide="8"] .admin-modules-col .admin-modules {
    grid-template-columns: 1fr 1fr;
  }

  .timeline {
    grid-template-columns: 1fr !important;
    gap: 8px;
  }

  .timeline-card {
    font-size: 0.9rem;
    padding: 12px 14px;
  }

  .opportunity-layout { gap: 12px; }
  .opportunity-chart { height: auto; min-height: 160px; }
  .opp-bar-track { height: 100px; max-width: 52px; }

  .income-flow {
    flex-direction: column;
    gap: 8px;
  }

  .flow-arrow .material-icons-round {
    transform: rotate(90deg);
  }

  .income-badges {
    flex-wrap: wrap;
    gap: 8px;
  }

  .sub-split {
    grid-template-columns: 1fr !important;
    gap: 8px;
  }

  .calc-row {
    flex-direction: column;
    gap: 10px;
  }

  .calc-operator {
    transform: rotate(90deg);
  }

  .scale-calc { gap: 8px; }
  .scale-step { padding: 14px 16px; }

  .features-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  .check-item {
    font-size: 0.9rem;
  }

  .vision-layout {
    grid-template-columns: 1fr !important;
    gap: 12px;
  }

  .vision-copy {
    text-align: center;
  }

  .vision-target-wrap {
    max-width: min(200px, 48vw);
  }

  .vision-target-img {
    max-width: min(200px, 48vw) !important;
    margin: 0 auto;
  }

  .vision-main {
    font-size: 0.95rem;
    line-height: 1.55;
  }

  .vision-steps {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    gap: 6px;
    width: 100%;
  }

  .vision-step {
    width: 100%;
    max-width: none;
    flex: none;
    min-width: 0 !important;
    padding: 12px 14px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
    text-align: left;
  }

  .vision-step .material-icons-round {
    font-size: 28px !important;
    margin-bottom: 0;
    flex-shrink: 0;
  }

  .vision-step p {
    font-size: 0.9rem !important;
    margin: 0;
    line-height: 1.35;
  }

  .vision-arrow {
    transform: rotate(90deg);
    display: flex;
    justify-content: center;
    line-height: 1;
  }

  .vision-arrow .material-icons-round {
    font-size: 22px !important;
  }

  .slide[data-slide="20"] .slide-content.vision-slide {
    gap: 14px;
    justify-content: flex-start;
  }

  .footer-brand {
    position: relative;
    margin-top: 12px;
  }

  .sync-hero-panel {
    position: relative;
    right: auto;
    bottom: auto;
    width: 100%;
    margin-top: 16px;
  }

  .nav-controls {
    bottom: 12px;
    padding: 6px 12px;
  }

  .sync-bar {
    top: auto;
    bottom: 58px;
    font-size: 0.68rem;
    padding: 6px 12px;
    max-width: calc(100% - 24px);
  }

  body.mode-viewer .sync-bar {
    bottom: 8px;
    font-size: 0.58rem;
    padding: 4px 8px;
  }

  body.mode-viewer .nav-controls {
    display: none;
  }

  .qr-fullscreen-card {
    padding: 24px 18px 20px;
    max-height: 96dvh;
    overflow-y: auto;
  }

  .qr-fullscreen-image {
    width: min(80vw, 320px);
  }
}