:root {
  --navy: #0B2D5C;
  --royal: #1E5AA8;
  --sky: #4A9FE8;
  --orange: #F5A623;
  --orange-dark: #E09010;
  --white: #FFFFFF;
  --gray-50: #F7F9FC;
  --gray-100: #EEF2F7;
  --gray-200: #D8E1EC;
  --gray-500: #6B7C93;
  --gray-700: #3D4F66;
  --shadow: 0 4px 24px rgba(11, 45, 92, 0.08);
  --shadow-lg: 0 12px 48px rgba(11, 45, 92, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --sidebar-w: 260px;
  --font: 'Montserrat', system-ui, sans-serif;
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--gray-50);
  color: var(--navy);
  line-height: 1.6;
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--navy);
  color: var(--white);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: transform var(--transition);
}

.sidebar-brand {
  padding: 28px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  gap: 14px;
}

.logo-mark {
  width: 48px;
  height: 48px;
  color: var(--orange);
  flex-shrink: 0;
}

.logo-mark svg { width: 100%; height: 100%; }
.logo-sun { color: var(--orange); }

.sidebar-title { display: flex; flex-direction: column; }
.city-name { font-weight: 700; font-size: 0.85rem; letter-spacing: 0.04em; text-transform: uppercase; }
.city-tag { font-size: 0.7rem; opacity: 0.7; margin-top: 2px; }

.sidebar-nav {
  flex: 1;
  padding: 20px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition);
}

.nav-link:hover { background: rgba(255,255,255,0.08); color: var(--white); }
.nav-link.active { background: var(--royal); color: var(--white); }
.nav-icon { font-size: 0.75rem; opacity: 0.8; }

.sidebar-footer {
  padding: 20px 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.slogan-mini { font-size: 0.7rem; font-weight: 600; }
.s-blue { color: var(--sky); }
.s-orange { color: var(--orange); }

.year-badge {
  background: var(--orange);
  color: var(--navy);
  font-weight: 800;
  font-size: 0.75rem;
  padding: 6px 10px;
  border-radius: 20px;
}

.sidebar-toggle {
  display: none;
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 200;
  background: var(--navy);
  color: var(--white);
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  font-size: 1.25rem;
  cursor: pointer;
  box-shadow: var(--shadow);
}

/* Main */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-width: 0;
}

/* Hero */
.hero {
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: 64px 48px 48px;
  background: var(--white);
  overflow: hidden;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px 64px;
  width: 100%;
  align-items: end;
}

.hero-accent {
  position: absolute;
  top: 0;
  right: 0;
  width: 45%;
  height: 100%;
  background: linear-gradient(135deg, transparent 40%, rgba(30, 90, 168, 0.06) 40%, rgba(245, 166, 35, 0.08) 100%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--royal);
  margin-bottom: 16px;
  grid-column: 1;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  grid-column: 1;
}

.hero h1 .highlight { color: var(--royal); }

.hero-slogan {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0;
  grid-column: 1;
}

.hero-slogan span { color: var(--royal); }
.hero-slogan .accent { color: var(--orange); }

.hero-desc {
  color: var(--gray-700);
  max-width: 520px;
  margin-bottom: 32px;
  font-size: 1rem;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  grid-column: 2;
  grid-row: 1 / -1;
  align-self: end;
  justify-content: flex-end;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 14px 28px;
  border-radius: 50px;
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

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

.btn-primary:hover {
  background: var(--orange-dark);
  border-color: var(--orange-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 166, 35, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--royal);
  border-color: var(--royal);
}

.btn-outline:hover {
  background: var(--royal);
  color: var(--white);
}

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

.hero-card {
  background: linear-gradient(145deg, var(--navy) 0%, var(--royal) 100%);
  color: var(--white);
  border-radius: var(--radius);
  padding: 36px;
  width: 100%;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.hero-card::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -40px;
  width: 120px;
  height: 120px;
  border: 3px solid var(--orange);
  border-radius: 50%;
  opacity: 0.4;
}

.hero-card--main .card-year {
  display: inline-block;
  background: var(--orange);
  color: var(--navy);
  font-weight: 800;
  font-size: 1.5rem;
  padding: 8px 20px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.card-label {
  display: block;
  font-size: 1.1rem;
  font-weight: 600;
  opacity: 0.9;
  margin-bottom: 28px;
}

.card-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stat {
  text-align: center;
  padding: 16px 8px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
}

.stat strong {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--orange);
}

.stat span { font-size: 0.75rem; opacity: 0.8; }

/* Metrics */
.dashboard-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 0 48px 48px;
  margin-top: -24px;
  position: relative;
  z-index: 2;
}

.metric-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.metric-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.metric-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.metric-icon svg { width: 24px; height: 24px; }
.metric-icon--people { background: rgba(30, 90, 168, 0.12); color: var(--royal); }
.metric-icon--video { background: rgba(74, 159, 232, 0.15); color: var(--sky); }
.metric-icon--quiz { background: rgba(245, 166, 35, 0.15); color: var(--orange); }
.metric-icon--award { background: rgba(11, 45, 92, 0.1); color: var(--navy); }

.metric-value {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--royal);
  line-height: 1;
  margin-bottom: 4px;
}

.metric-label { font-weight: 600; font-size: 0.95rem; margin-bottom: 4px; }
.metric-hint { font-size: 0.8rem; color: var(--gray-500); }

/* Sections */
.section-title {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.section-subtitle {
  color: var(--gray-500);
  font-size: 0.95rem;
}

.section-header { margin-bottom: 32px; }

.concept-quote {
  padding: 0 48px 32px;
  margin-top: -16px;
}

.concept-quote blockquote {
  background: linear-gradient(135deg, var(--navy) 0%, var(--royal) 100%);
  color: var(--white);
  padding: 32px 40px;
  border-radius: var(--radius);
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.7;
  border-left: 5px solid var(--orange);
  box-shadow: var(--shadow-lg);
}

.roles-section,
.venue-section,
.stages-section,
.speeches-section,
.brand-section,
.chatbot-section,
.presentation-section {
  padding: 64px 48px;
}

.roles-section { background: var(--gray-50); }
.venue-section { background: var(--white); }

.idea-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.idea-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--royal);
}

.idea-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 12px;
}

.idea-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.idea-card p { font-size: 0.9rem; color: var(--gray-700); }

.venue-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  align-items: start;
}

.venue-photo-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.venue-photo {
  width: 100%;
  height: auto;
  display: block;
}

.venue-photo-caption {
  padding: 14px 20px;
  background: var(--navy);
  color: rgba(255,255,255,0.85);
  font-size: 0.85rem;
}

.venue-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.venue-card {
  background: var(--gray-50);
  border-radius: var(--radius);
  padding: 24px;
  border-left: 4px solid var(--orange);
}

.venue-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.venue-list {
  list-style: none;
}

.venue-list li {
  position: relative;
  padding-left: 18px;
  font-size: 0.9rem;
  color: var(--gray-700);
  margin-bottom: 8px;
}

.venue-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--orange);
  font-weight: 700;
}

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

.schema-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-700);
  background: var(--gray-50);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
}

.schema-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.schema-dot--stage { background: var(--navy); }
.schema-dot--screen { background: var(--royal); }
.schema-dot--tables { background: var(--orange); }
.schema-dot--photo { background: var(--sky); }

.roles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.role-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  border-top: 4px solid var(--royal);
}

.role-card--head { border-top-color: var(--orange); }

.role-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: 20px;
  background: rgba(30, 90, 168, 0.12);
  color: var(--royal);
  margin-bottom: 12px;
}

.role-badge--mod1 { background: rgba(11, 45, 92, 0.1); color: var(--navy); }
.role-badge--mod2 { background: rgba(74, 159, 232, 0.15); color: var(--sky); }

.role-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.role-card p { font-size: 0.9rem; color: var(--gray-700); }

/* Timeline */
.stages-section { background: var(--white); }

.timeline { display: flex; flex-direction: column; gap: 0; }

.stage-card {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  padding-bottom: 40px;
}

.stage-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stage-num {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.stage-line {
  flex: 1;
  width: 3px;
  background: linear-gradient(to bottom, var(--royal), var(--sky));
  margin-top: 8px;
  min-height: 40px;
  border-radius: 2px;
}

.stage-card:last-child .stage-line { display: none; }

.stage-body {
  background: var(--gray-50);
  border-radius: var(--radius);
  padding: 28px 32px;
  border-left: 4px solid var(--royal);
  transition: box-shadow var(--transition);
}

.stage-card:hover .stage-body { box-shadow: var(--shadow); }

.stage-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 8px;
}

.stage-tag {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: 20px;
}

.stage-tag--intro { background: rgba(11, 45, 92, 0.1); color: var(--navy); }
.stage-tag--video { background: rgba(74, 159, 232, 0.2); color: var(--royal); }
.stage-tag--quiz { background: rgba(245, 166, 35, 0.2); color: var(--orange-dark); }
.stage-tag--award { background: rgba(30, 90, 168, 0.15); color: var(--royal); }
.stage-tag--final { background: var(--navy); color: var(--white); }

.stage-duration {
  font-size: 0.8rem;
  color: var(--gray-500);
  font-weight: 500;
}

.stage-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.stage-body > p {
  color: var(--gray-700);
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.stage-points {
  list-style: none;
  margin-bottom: 16px;
}

.stage-points li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9rem;
  color: var(--gray-700);
  margin-bottom: 6px;
}

.stage-points li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--orange);
  font-weight: 700;
}

.stage-expand {
  background: none;
  border: none;
  color: var(--royal);
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.875rem;
  cursor: pointer;
  padding: 0;
  transition: color var(--transition);
}

.stage-expand:hover { color: var(--orange); }

/* Speeches */
.speeches-section { background: var(--gray-50); }

.speech-filters {
  display: flex;
  gap: 8px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 20px;
  border-radius: 50px;
  border: 2px solid var(--gray-200);
  background: var(--white);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-700);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover { border-color: var(--royal); color: var(--royal); }
.filter-btn.active {
  background: var(--royal);
  border-color: var(--royal);
  color: var(--white);
}

.speeches-list { display: flex; flex-direction: column; gap: 24px; }

.speech-block {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  scroll-margin-top: 24px;
}

.speech-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--gray-100);
  flex-wrap: wrap;
}

.speech-stage {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--navy);
}

.speech-speakers {
  font-size: 0.8rem;
  color: var(--gray-500);
  font-weight: 500;
}

.speech-lines { display: flex; flex-direction: column; gap: 16px; }

.speech-line {
  padding: 16px 20px;
  background: var(--gray-50);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--gray-200);
}

.speech-line--highlight {
  background: linear-gradient(135deg, rgba(11, 45, 92, 0.05), rgba(245, 166, 35, 0.08));
  border-left-color: var(--orange);
}

.speech-line p { font-size: 0.95rem; color: var(--gray-700); margin-top: 8px; }
.speech-line p + p { margin-top: 12px; }

.speaker-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 10px;
  border-radius: 4px;
}

.speaker-tag--mod1 { background: rgba(11, 45, 92, 0.12); color: var(--navy); }
.speaker-tag--mod2 { background: rgba(74, 159, 232, 0.2); color: var(--royal); }
.speaker-tag--mod { background: rgba(30, 90, 168, 0.15); color: var(--royal); }
.speaker-tag--head { background: rgba(245, 166, 35, 0.25); color: var(--orange-dark); }
.speaker-tag--hero { background: rgba(74, 159, 232, 0.15); color: var(--royal); }

.speech-block--highlight {
  box-shadow: 0 0 0 3px var(--orange), var(--shadow-lg);
  transition: box-shadow 0.3s ease;
}

.speech-action {
  text-align: center;
  padding: 12px;
  background: var(--navy);
  color: var(--white);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
}

.speech-example {
  padding: 16px 20px;
  background: rgba(30, 90, 168, 0.08);
  border-radius: var(--radius-sm);
  border: 1px dashed var(--royal);
}

.speech-example strong { display: block; margin-bottom: 6px; color: var(--royal); }
.speech-example p { font-size: 0.9rem; color: var(--gray-700); }

.speech-block.hidden { display: none; }
.speech-line.hidden { display: none; }

/* Brand */
.brand-section { background: var(--white); }

.brand-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.brand-card {
  background: var(--gray-50);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--gray-100);
}

.brand-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--navy);
}

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

.color-swatch {
  background: var(--swatch);
  border-radius: var(--radius-sm);
  padding: 16px;
  color: var(--white);
  min-height: 80px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.color-swatch span { font-weight: 700; font-size: 0.85rem; }
.color-swatch code { font-size: 0.75rem; opacity: 0.85; font-family: monospace; margin-top: 2px; }

.slogan-display {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.brand-note { font-size: 0.85rem; color: var(--gray-500); }

.elements-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.element-item {
  text-align: center;
}

.element-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 10px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  border: 2px solid var(--gray-200);
}

.element-icon svg { width: 36px; height: 36px; }
.element-icon--sun { color: var(--orange); border-color: var(--orange); }
.element-icon--water { color: var(--sky); border-color: var(--sky); }
.element-icon--city { color: var(--royal); border-color: var(--royal); }
.element-icon--move { color: var(--navy); border-color: var(--navy); }

.element-item span { font-size: 0.75rem; font-weight: 600; color: var(--gray-700); }

.principles-flow {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.principle-step {
  flex: 1;
  min-width: 120px;
  background: var(--white);
  padding: 16px;
  border-radius: var(--radius-sm);
  text-align: center;
}

.principle-num {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  background: var(--royal);
  color: var(--white);
  border-radius: 50%;
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.principle-step strong { display: block; font-size: 0.95rem; margin-bottom: 4px; }
.principle-step p { font-size: 0.75rem; color: var(--gray-500); }

.principle-arrow { color: var(--orange); font-weight: 700; font-size: 1.25rem; }

.infographic-demo {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.info-stat { text-align: center; }

.info-num {
  display: block;
  font-size: 3rem;
  font-weight: 800;
  color: var(--royal);
  line-height: 1;
}

.info-label {
  font-size: 0.8rem;
  color: var(--gray-500);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.collateral-list {
  list-style: none;
}

.collateral-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--gray-200);
  font-size: 0.9rem;
  color: var(--gray-700);
}

.collateral-list li:last-child { border-bottom: none; }
.collateral-list strong { color: var(--navy); }

.brand-preview {
  margin-top: 32px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
}

.brand-preview-img {
  width: 100%;
  height: auto;
  display: block;
}

.brand-preview-caption {
  padding: 14px 20px;
  background: var(--gray-50);
  font-size: 0.85rem;
  color: var(--gray-500);
  text-align: center;
}

/* Chatbot */
.chatbot-section { background: var(--gray-50); }

.chatbot-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 32px;
  align-items: start;
}

.chatbot-mockup {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
}

.chat-header {
  background: var(--navy);
  color: var(--white);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-avatar {
  width: 40px;
  height: 40px;
  background: var(--orange);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.chat-header strong { display: block; font-size: 0.9rem; }
.chat-header span { font-size: 0.75rem; opacity: 0.7; }

.chat-messages {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 320px;
  background: #E8EDF4;
}

.chat-msg {
  max-width: 90%;
  padding: 12px 16px;
  border-radius: 16px;
  font-size: 0.85rem;
  line-height: 1.5;
}

.chat-msg--bot {
  background: var(--white);
  color: var(--gray-700);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.chat-msg--user {
  background: var(--royal);
  color: var(--white);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.chat-buttons {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-self: flex-start;
}

.chat-btn {
  padding: 10px 16px;
  border-radius: 20px;
  border: 2px solid var(--royal);
  background: var(--white);
  color: var(--royal);
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
}

.chat-btn--active {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--navy);
}

.chatbot-features {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chatbot-feature {
  background: var(--white);
  border-radius: var(--radius);
  padding: 20px 24px;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  align-items: start;
}

.feature-num {
  width: 40px;
  height: 40px;
  background: var(--navy);
  color: var(--orange);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.85rem;
}

.chatbot-feature h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.chatbot-feature p {
  font-size: 0.85rem;
  color: var(--gray-700);
}

.stage-tag--immersion { background: rgba(245, 166, 35, 0.2); color: var(--orange-dark); }
.stage-tag--report { background: rgba(11, 45, 92, 0.12); color: var(--navy); }

/* Presentation */
.presentation-section { background: var(--gray-50); }

.presentation-player {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.player-screen {
  position: relative;
  min-height: 420px;
  background: linear-gradient(135deg, var(--navy) 0%, var(--royal) 60%, rgba(245, 166, 35, 0.3) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
}

.player-slide {
  display: none;
  text-align: center;
  color: var(--white);
  max-width: 640px;
  animation: fadeIn 0.4s ease;
}

.player-slide.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.player-year {
  display: inline-block;
  background: var(--orange);
  color: var(--navy);
  font-weight: 800;
  font-size: 1.25rem;
  padding: 8px 24px;
  border-radius: 50px;
  margin-bottom: 20px;
}

.player-slide h2 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.player-city { font-size: 1.1rem; opacity: 0.9; margin-bottom: 20px; }

.player-slogan { font-size: 1.5rem; font-weight: 700; }
.player-slogan .accent { color: var(--orange); }

.player-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 6px 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-radius: 20px;
  margin-bottom: 20px;
}

.player-slide p { font-size: 1.15rem; opacity: 0.9; line-height: 1.7; }

.player-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 24px;
  background: var(--gray-50);
}

.player-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid var(--royal);
  background: var(--white);
  color: var(--royal);
  font-size: 1.25rem;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.player-btn:hover {
  background: var(--royal);
  color: var(--white);
}

.player-btn--fullscreen { margin-left: auto; }

.player-dots {
  display: flex;
  gap: 8px;
}

.player-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gray-200);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  padding: 0;
}

.player-dot.active {
  background: var(--orange);
  width: 28px;
  border-radius: 5px;
}

.player-progress {
  height: 4px;
  background: var(--gray-100);
}

.player-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--royal), var(--orange));
  transition: width 0.4s ease;
  width: 16.66%;
}

/* Footer */
.footer {
  background: var(--navy);
  color: var(--white);
  padding: 48px;
  text-align: center;
}

.footer-brand { margin-bottom: 16px; }
.footer-city { display: block; font-weight: 800; font-size: 1.25rem; letter-spacing: 0.08em; }
.footer-tag { font-size: 0.8rem; opacity: 0.7; }

.footer-slogan {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-slogan .accent { color: var(--orange); }
.footer-copy { font-size: 0.8rem; opacity: 0.5; }

/* Responsive */
@media (max-width: 1200px) {
  .dashboard-metrics { grid-template-columns: repeat(2, 1fr); }
  .idea-grid { grid-template-columns: 1fr; }
  .venue-grid { grid-template-columns: 1fr; }
  .chatbot-grid { grid-template-columns: 1fr; }
  .brand-grid { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .sidebar-toggle { display: flex; align-items: center; justify-content: center; }
  .main { margin-left: 0; }
  .hero { padding: 80px 24px 32px; }
  .hero-content {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .hero-actions {
    grid-column: 1;
    grid-row: auto;
    justify-content: flex-start;
  }
  .concept-quote { padding: 0 24px 24px; }
  .dashboard-metrics { padding: 0 24px 32px; grid-template-columns: 1fr; }
  .roles-section, .venue-section, .stages-section, .speeches-section, .brand-section, .chatbot-section, .presentation-section { padding: 48px 24px; }
  .stage-card { grid-template-columns: 60px 1fr; }
  .elements-grid { grid-template-columns: repeat(2, 1fr); }
  .venue-schema { grid-template-columns: 1fr; }
  .player-slide h2 { font-size: 1.75rem; }
}

@media (max-width: 600px) {
  .stage-num { width: 44px; height: 44px; font-size: 0.75rem; }
  .infographic-demo { flex-direction: column; align-items: center; }
  .principles-flow { flex-direction: column; }
  .principle-arrow { transform: rotate(90deg); }
}

/* Fullscreen presentation */
.presentation-player:fullscreen .player-screen { min-height: 100vh; }
.presentation-player:fullscreen .player-slide h2 { font-size: 3.5rem; }