:root {
  --primary-blue: #0052CC;
  --primary-blue-hover: #1976D2;
  --light-blue: #2196F3;
  --teal: #20B2AA;
  --purple: #4169E1;
  --green: #32CD32;
  --violet: #9370DB;
  --text-dark: #1a1a1a;
  --text-light: #666;
  --bg-white: #ffffff;
  --bg-light: #f8fafc;
  --border-light: #e2e8f0;
  --shadow-light: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-medium: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-large: 0 10px 25px rgba(0,0,0,0.15);
  --shadow-extra-large: 0 20px 40px rgba(0,0,0,0.2);
  --gradient-teal: linear-gradient(135deg, #20B2AA 0%, #4169E1 100%);
  --gradient-purple: linear-gradient(135deg, #4169E1 0%, #9370DB 100%);
  --gradient-green: linear-gradient(135deg, #32CD32 0%, #20B2AA 100%);
  --gradient-main: linear-gradient(135deg, #20B2AA 0%, #4169E1 50%, #9370DB 100%);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-light);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-light);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-logo-img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: contain;
}

.nav-progress {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
  max-width: 400px;
  margin: 0 2rem;
}

.progress-bar {
  flex: 1;
  height: 4px;
  background: var(--border-light);
  border-radius: 2px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--gradient-main);
  border-radius: 2px;
  transition: width 0.3s ease;
  width: 8.33%;
}

.slide-counter {
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 500;
}

.nav-controls {
  display: flex;
  gap: 0.5rem;
}

.nav-btn {
  padding: 0.5rem 1rem;
  background: transparent;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.nav-btn:hover {
  background: var(--bg-light);
  transform: translateY(-1px);
}

.nav-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.presentation-btn {
  background: var(--gradient-teal) !important;
  color: white !important;
  border: none !important;
  font-weight: 600;
}

.presentation-btn:hover {
  background: var(--gradient-purple) !important;
  transform: translateY(-2px);
}

/* Presentation Mode */
.presentation-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: #000;
  z-index: 9999;
  display: none;
  flex-direction: column;
  opacity: 0;
  transition: opacity 0.5s ease;
  cursor: none;
}

.presentation-overlay.active {
  display: flex;
  opacity: 1;
}

/* 마우스 이동시 커서 표시 및 컨트롤 자동 표시/숨김 */
.presentation-overlay:hover {
  cursor: auto;
}

.presentation-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.8), rgba(0,0,0,0));
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 10000;
  opacity: 0;
  transform: translateY(-100%);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.presentation-overlay:hover .presentation-header {
  opacity: 1;
  transform: translateY(0);
}

.presentation-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.pres-btn {
  background: rgba(255, 255, 255, 0.9);
  border: none;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--text-dark);
}

.pres-btn:hover {
  background: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

.presentation-divider {
  color: rgba(255, 255, 255, 0.5);
  font-weight: 300;
}

.presentation-counter {
  color: white;
  font-weight: 500;
  font-size: 0.9rem;
}

.exit-presentation {
  background: rgba(255, 59, 48, 0.9);
  border: none;
  color: white;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.exit-presentation:hover {
  background: rgba(255, 59, 48, 1);
  transform: translateY(-1px);
}

.presentation-content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  overflow: hidden;
  width: 100vw;
  height: 100vh;
}

.presentation-content .slide-content {
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: 3rem;
  background: white;
  border-radius: 0;
  box-shadow: none;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.presentation-content .slide-content > * {
  max-width: 100%;
  width: 100%;
  overflow: hidden;
}

/* 모든 그리드를 100% 너비로 확장 */
.presentation-content .problems-grid,
.presentation-content .market-sectors,
.presentation-content .tech-grid,
.presentation-content .strengths-grid,
.presentation-content .features-grid-horizontal,
.presentation-content .advantages-grid,
.presentation-content .revenue-streams,
.presentation-content .features-showcase,
.presentation-content .features-grid,
.presentation-content .competition-comparison {
  width: 100%;
  max-width: none;
}

/* 발표 모드에서 호버 효과 강화 */
.presentation-content .problem-card:hover,
.presentation-content .sector-card:hover,
.presentation-content .feature-card:hover,
.presentation-content .advantage-item:hover,
.presentation-content .revenue-card:hover,
.presentation-content .tech-category:hover,
.presentation-content .comparison-item:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 15px 40px rgba(0,0,0,0.15);
  z-index: 10;
  position: relative;
}

.presentation-content .feature-item:hover {
  transform: translateX(12px) scale(1.02);
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

/* 카드들이 화면을 최대한 활용하도록 */
.presentation-content .problems-grid {
  grid-template-columns: repeat(3, 1fr);
  gap: min(2rem, 3vw);
  width: 100%;
}

.presentation-content .market-sectors {
  grid-template-columns: repeat(3, 1fr);
  gap: min(2rem, 3vw);
  width: 100%;
}

.presentation-content .advantages-grid {
  grid-template-columns: repeat(3, 1fr);
  gap: min(2rem, 3vw);
  width: 100%;
}

.presentation-content .features-grid-horizontal {
  grid-template-columns: repeat(4, 1fr);
  gap: min(2rem, 2.5vw);
  width: 100%;
}

.presentation-content .revenue-streams {
  grid-template-columns: repeat(2, 1fr);
  gap: min(3rem, 4vw);
  width: 100%;
}

.presentation-content .competition-comparison {
  grid-template-columns: 1fr auto 1fr;
  gap: min(3rem, 4vw);
  width: 100%;
  align-items: flex-start;
}

.presentation-content .tech-grid {
  grid-template-columns: repeat(3, 1fr);
  gap: min(2rem, 3vw);
  width: 100%;
}

/* 컨테이너들도 100% 너비 사용 */
.presentation-content .demo-container {
  grid-template-columns: 1fr 1fr;
  gap: min(3rem, 4vw);
  width: 100%;
}

.presentation-content .hero-stats {
  width: 100%;
  justify-content: space-around;
}

.presentation-content .cta-stats {
  width: 100%;
  justify-content: space-around;
}

.presentation-content .slide-title {
  font-size: min(2.8rem, 7vh);
  margin-bottom: min(2rem, 3vh);
  text-align: center;
  line-height: 1.2;
}

.presentation-content .hero-title {
  font-size: min(4rem, 9vh);
  margin-bottom: min(1rem, 2vh);
  line-height: 1.1;
}

.presentation-content .hero-subtitle {
  font-size: min(2rem, 4.5vh);
  margin-bottom: min(1.5rem, 3vh);
}

.presentation-content .hero-description {
  font-size: min(1.3rem, 3.2vh);
  margin-bottom: min(2rem, 4vh);
}

.presentation-content .problems-grid,
.presentation-content .market-sectors,
.presentation-content .tech-grid,
.presentation-content .strengths-grid,
.presentation-content .features-grid-horizontal {
  gap: min(2rem, 3vh);
  margin-bottom: min(2rem, 3vh);
}

.presentation-content .problem-card,
.presentation-content .sector-card,
.presentation-content .tech-category,
.presentation-content .strength-item,
.presentation-content .feature-card,
.presentation-content .revenue-card {
  padding: min(1.8rem, 2.5vh);
}

.presentation-content .problem-card,
.presentation-content .sector-card {
  min-height: min(280px, 35vh);
}

.presentation-content .advantage-item {
  padding: min(2rem, 3vh);
  min-height: auto;
}

.presentation-content .solution-visual {
  margin: min(2.5rem, 4vh) 0;
  gap: min(1.5rem, 2vh);
}

.presentation-content .demo-container {
  gap: min(3rem, 4vh);
}

.presentation-content .hero-stats {
  gap: min(3rem, 4vh);
  margin-top: min(2rem, 3vh);
}

.presentation-content .stat-number {
  font-size: min(2.2rem, 4.5vh);
}

.presentation-content .roadmap {
  gap: min(1.5rem, 2vh);
  margin-bottom: min(2.5rem, 4vh);
}

.presentation-content .roadmap-phase {
  padding: min(2rem, 3vh);
}

.presentation-content .cta-title {
  font-size: min(3.5rem, 7vh);
  margin-bottom: min(2rem, 3vh);
}

.presentation-content .thank-you-title {
  font-size: min(4.5rem, 9vh);
  margin-bottom: min(2rem, 3vh);
}

.presentation-content .cta-stats {
  gap: min(4rem, 6vh);
  margin-bottom: min(3rem, 4vh);
}

.presentation-content .stat-large {
  font-size: min(3rem, 6vh);
}

/* 긴 텍스트들 조정 */
.presentation-content p,
.presentation-content li {
  font-size: min(1.1rem, 2.8vh);
  line-height: 1.5;
}

.presentation-content h3 {
  font-size: min(1.4rem, 3.2vh);
  margin-bottom: min(1rem, 1.5vh);
}

.presentation-content h4 {
  font-size: min(1.2rem, 2.8vh);
  margin-bottom: min(0.8rem, 1.2vh);
}

/* 발표 모드에서 VS 요소 최적화 */
.presentation-content .vs {
  font-size: min(2.5rem, 5vh);
  font-weight: bold;
  color: var(--teal);
  text-align: center;
  align-self: flex-start;
  margin-top: min(2rem, 3vh);
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.presentation-content .comparison-item {
  padding: min(2rem, 3vh);
  height: fit-content;
}

.presentation-content .comparison-item h3 {
  font-size: min(1.3rem, 2.8vh);
  margin-bottom: min(1.5rem, 2vh);
}

.presentation-content .point {
  padding: min(0.8rem, 1.2vh);
  font-size: min(0.95rem, 2vh);
  line-height: 1.4;
}

.presentation-content .revenue-streams,
.presentation-content .features-showcase,
.presentation-content .features-grid {
  gap: min(3rem, 4vh);
  margin-bottom: min(2rem, 3vh);
}

/* 경쟁 우위 슬라이드 - 텍스트 잘림 방지 */
.presentation-content .unique-advantages {
  padding: min(2rem, 3vh);
  margin-top: min(2rem, 3vh);
}

.presentation-content .advantages-grid {
  gap: min(2rem, 3vh);
}

.presentation-content .advantage-item p {
  font-size: min(1rem, 2.5vh);
  line-height: 1.4;
}

.presentation-content .advantage-item h4 {
  font-size: min(1.2rem, 2.8vh);
  margin-bottom: min(0.8rem, 1vh);
}

/* 핵심 기능 새 레이아웃 최적화 */
.presentation-content .features-grid {
  gap: min(3rem, 4vh);
}

.presentation-content .features-grid-horizontal {
  gap: min(2rem, 2.5vh);
  grid-template-columns: repeat(4, 1fr);
}

.presentation-content .features-grid-horizontal .feature-card {
  padding: min(1.5rem, 2vh);
  min-height: min(180px, 22vh);
}

.presentation-content .features-grid-horizontal .feature-card h4 {
  font-size: min(1.1rem, 2.5vh);
  margin-bottom: min(0.8rem, 1vh);
}

.presentation-content .features-grid-horizontal .feature-card p {
  font-size: min(1rem, 2.3vh);
  line-height: 1.4;
}

/* 핵심 기능 슬라이드 최적화 */
.presentation-content .features-showcase {
  gap: min(2rem, 2.5vh);
}

.presentation-content .feature-card.featured {
  padding: min(1.2rem, 1.8vh);
}

.presentation-content .feature-header h3 {
  font-size: min(1.2rem, 2.5vh);
  margin-bottom: min(0.8rem, 1vh);
}

.presentation-content .feature-card p {
  font-size: min(0.9rem, 2vh);
  margin-bottom: min(1rem, 1.5vh);
}

.presentation-content .stake-example {
  font-size: min(0.8rem, 1.8vh);
  margin-bottom: min(0.5rem, 0.8vh);
}

.presentation-content .features-grid .feature-card {
  padding: min(1rem, 1.5vh);
}

.presentation-content .features-grid .feature-card h4 {
  font-size: min(1rem, 2.2vh);
  margin-bottom: min(0.5rem, 0.8vh);
}

.presentation-content .features-grid .feature-card p {
  font-size: min(0.85rem, 1.8vh);
}

/* 수익 모델 슬라이드 최적화 */
.presentation-content .revenue-card h3 {
  font-size: min(1.1rem, 2.3vh);
  margin-bottom: min(1rem, 1.5vh);
}

.presentation-content .revenue-card h4 {
  font-size: min(0.95rem, 2vh);
  margin-bottom: min(0.6rem, 1vh);
}

.presentation-content .revenue-details {
  gap: min(0.8rem, 1vh);
}

.presentation-content .revenue-item {
  padding: min(0.8rem, 1.2vh);
  font-size: min(0.85rem, 1.8vh);
}

.presentation-content .revenue-secondary .revenue-card {
  padding: min(1rem, 1.5vh);
}

.presentation-content .revenue-principle {
  padding: min(1.5rem, 2vh);
}

.presentation-content .principles {
  gap: min(0.8rem, 1vh);
}

.presentation-content .principle {
  padding: min(0.8rem, 1.2vh);
  font-size: min(0.9rem, 1.9vh);
}

.presentation-footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8), rgba(0,0,0,0));
  padding: 1rem 2rem;
  z-index: 10000;
  opacity: 0;
  transform: translateY(100%);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.presentation-overlay:hover .presentation-footer {
  opacity: 1;
  transform: translateY(0);
}

.presentation-progress {
  width: 100%;
}

.presentation-progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 3px;
  overflow: hidden;
}

.presentation-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #20B2AA 0%, #4169E1 50%, #9370DB 100%);
  border-radius: 3px;
  transition: width 0.3s ease;
  width: 8.33%;
}

.presentation-dots {
  position: absolute;
  bottom: 4rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.8rem;
  z-index: 10000;
  opacity: 0;
  transform: translateX(-50%) translateY(50px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.presentation-overlay:hover .presentation-dots {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.presentation-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.presentation-dot.active {
  background: white;
  transform: scale(1.2);
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.2);
}

.presentation-dot:hover {
  background: rgba(255, 255, 255, 0.8);
  transform: scale(1.1);
}

/* Slides */
.slides-container {
  padding-top: 80px;
  min-height: 100vh;
}

.slide {
  min-height: calc(100vh - 80px);
  display: none;
  opacity: 0;
  transform: translateX(50px);
  transition: all 0.5s ease;
}

.slide.active {
  display: block;
  opacity: 1;
  transform: translateX(0);
}

.slide-content {
  padding: 1.5rem 2rem 2rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: calc(100vh - 80px);
}

.slide-title {
  font-size: 2.8rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-align: center;
}

.gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Title Slide */
.title-slide {
  text-align: center;
  padding: 4rem 2rem;
}

.title-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

.title-logo {
  width: 120px;
  height: 120px;
  border-radius: 20px;
  object-fit: contain;
  box-shadow: var(--shadow-large);
}

.hero-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--gradient-teal);
  color: white;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 2rem;
}

.hero-title {
  font-size: 4.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
  margin-top: 0;
}

.hero-subtitle {
  font-size: 2rem;
  color: var(--text-light);
  font-weight: 400;
  margin-bottom: 2rem;
}

.hero-description {
  font-size: 1.3rem;
  color: var(--text-light);
  margin-bottom: 3rem;
  line-height: 1.8;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 2rem;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

/* Problem Slide */
.problems-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.problem-card {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
  text-align: center;
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 250px;
}

.problem-card:hover {
  transform: translateY(-5px);
}

.problem-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: var(--teal);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(32, 178, 170, 0.1) 0%, rgba(65, 105, 225, 0.1) 100%);
  border: 2px solid rgba(32, 178, 170, 0.3);
}

.problem-card h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.problem-card p {
  color: var(--text-light);
  line-height: 1.6;
  flex-grow: 1;
  display: flex;
  align-items: center;
}

.problem-highlight {
  background: linear-gradient(135deg, rgba(32, 178, 170, 0.1) 0%, rgba(65, 105, 225, 0.1) 100%);
  border: 1px solid rgba(32, 178, 170, 0.3);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
}

.problem-highlight p {
  font-size: 1.2rem;
  color: var(--text-dark);
}

/* Solution Slide */
.solution-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin: 3rem 0;
  flex-wrap: wrap;
}

.solution-step {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: var(--shadow-medium);
  text-align: center;
  flex: 1;
  min-width: 200px;
  max-width: 250px;
}

.step-number {
  width: 50px;
  height: 50px;
  background: var(--gradient-teal);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0 auto 1rem auto;
}

.solution-step h3 {
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

.arrow {
  font-size: 2rem;
  color: var(--teal);
  font-weight: bold;
}

.solution-benefits {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.benefit {
  text-align: center;
  padding: 1.5rem;
}

.benefit h4 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Code Examples Slides - Override title margin */
.slide[data-slide="6"] .slide-title,
.slide[data-slide="7"] .slide-title {
  margin-top: -20px;
}

/* Code Examples Slides */
.code-images-container {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  justify-content: center;
  height: auto;
  max-height: calc(100vh - 200px);
  padding: 0;
  overflow: hidden;
  margin-top: 1rem;
}

.code-images-container.single-image {
  justify-content: center;
}

.code-image-wrapper {
  flex: 1;
  max-width: 45%;
  text-align: center;
  padding: 0;
  margin: 0;
  height: auto;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.code-image-wrapper.large {
  flex: none;
  max-width: 70%;
}

.code-screenshot {
  width: 100%;
  height: auto;
  max-height: 55vh;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: var(--shadow-large);
  border: 1px solid var(--border-light);
  background: white;
  padding: 0;
  margin: 0 auto;
  display: block;
}

.code-caption {
  margin-top: 1rem;
  font-size: 1rem;
  color: var(--text-light);
  font-weight: 500;
  line-height: 1.4;
  flex-shrink: 0;
}

/* Demo Slide - Compact Layout */
.demo-container {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  min-height: 50vh;
}

.demo-features {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.feature-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.2rem;
  background: white;
  border-radius: 12px;
  box-shadow: var(--shadow-light);
  border: 1px solid var(--border-light);
  transition: transform 0.2s ease;
}

.feature-item:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-medium);
}

.feature-icon {
  font-size: 1.8rem;
  flex-shrink: 0;
  color: var(--teal);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(32, 178, 170, 0.1) 0%, rgba(65, 105, 225, 0.1) 100%);
  border: 2px solid rgba(32, 178, 170, 0.2);
}

.feature-item h3 {
  font-size: 1.1rem;
  margin-bottom: 0.4rem;
  color: var(--text-dark);
}

.feature-item p {
  color: var(--text-light);
  font-size: 0.9rem;
  line-height: 1.4;
}

.demo-preview {
  display: flex;
  justify-content: center;
}

.browser-mockup {
  background: white;
  border-radius: 12px;
  box-shadow: var(--shadow-large);
  overflow: hidden;
  width: 100%;
  max-width: 900px;
  cursor: pointer;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.browser-mockup:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-extra-large);
}

.browser-bar {
  background: #f5f5f5;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid #ddd;
}

.browser-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #28ca42; }

.url-bar {
  background: white;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.8rem;
  color: var(--text-light);
  flex: 1;
}

.browser-content {
  padding: 0;
}

.mock-interface {
  text-align: center;
}

.mock-header {
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.5rem;
}

.mock-policy {
  background: var(--bg-light);
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.policy-title {
  font-weight: 600;
  margin-bottom: 0.8rem;
}

.policy-stakes {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
}

.stake.support {
  color: var(--green);
  font-weight: 600;
}

.stake.oppose {
  color: #e74c3c;
  font-weight: 600;
}

/* Tech Stack & Key Features - Compact Layout */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.tech-category {
  background: white;
  padding: 1.5rem;
  border-radius: 16px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
}

.tech-category h3 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tech-items {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.tech-item {
  padding: 0.6rem 0.8rem;
  background: var(--bg-light);
  border-radius: 8px;
  border: 1px solid var(--border-light);
  font-weight: 500;
  font-size: 0.9rem;
  line-height: 1.4;
}

.tech-highlight {
  background: linear-gradient(135deg, rgba(32, 178, 170, 0.1) 0%, rgba(65, 105, 225, 0.1) 100%);
  border: 1px solid rgba(32, 178, 170, 0.3);
  border-radius: 16px;
  padding: 1.5rem;
  text-align: center;
}

.tech-highlight h3 {
  font-size: 1.3rem;
  margin-bottom: 0.8rem;
  color: var(--text-dark);
}

.tech-highlight p {
  font-size: 1rem;
  color: var(--text-light);
  margin: 0;
}

/* Features Grid - Compact Layout */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.feature-category {
  background: white;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
}

.feature-category h3 {
  font-size: 1.1rem;
  margin-bottom: 0.8rem;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.feature-items {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.feature-item {
  background: var(--bg-light);
  padding: 0.6rem 0.8rem;
  border-radius: 6px;
  font-size: 0.9rem;
  border: 1px solid var(--border-light);
  transition: all 0.3s ease;
}

.feature-item:hover {
  background: linear-gradient(135deg, rgba(32, 178, 170, 0.1), rgba(65, 105, 225, 0.1));
  border-color: var(--teal);
  transform: translateX(3px);
}

.features-highlight {
  background: linear-gradient(135deg, rgba(32, 178, 170, 0.1), rgba(65, 105, 225, 0.1));
  padding: 1.5rem;
  border-radius: 12px;
  text-align: center;
  border: 1px solid rgba(32, 178, 170, 0.2);
}

.features-highlight h3 {
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.features-highlight p {
  color: var(--text-light);
  line-height: 1.5;
  font-size: 1rem;
}

/* Old Features Showcase (keeping for backward compatibility) */
.features-showcase {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  align-items: start;
}

.feature-card {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
}

.feature-card.featured {
  background: linear-gradient(135deg, rgba(32, 178, 170, 0.05) 0%, rgba(65, 105, 225, 0.05) 100%);
  border: 2px solid var(--teal);
}

.feature-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.feature-icon {
  font-size: 2.5rem;
  color: var(--teal);
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(32, 178, 170, 0.15) 0%, rgba(65, 105, 225, 0.15) 100%);
  border: 2px solid rgba(32, 178, 170, 0.3);
}

.features-grid .feature-icon {
  font-size: 1.8rem;
  width: 50px;
  height: 50px;
  border-radius: 12px;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.5rem;
  color: var(--text-dark);
}

.feature-card h4 {
  font-size: 1.2rem;
  color: var(--text-dark);
  margin-bottom: 0.8rem;
}

.feature-card p {
  color: var(--text-light);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.feature-example {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.stake-example {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.stake-bar {
  height: 8px;
  border-radius: 4px;
  width: 200px;
  position: relative;
}

.stake-bar.high {
  background: var(--gradient-green);
}

.stake-bar.low {
  background: var(--gradient-purple);
  width: 100px;
}

.features-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.features-grid .feature-card {
  padding: 1.5rem;
}

.features-grid .feature-icon {
  font-size: 1.8rem;
  margin-bottom: 0.8rem;
}

/* Market Opportunity */
.market-sectors {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.sector-card {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
  text-align: center;
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 320px;
}

.sector-card:hover {
  transform: translateY(-5px);
}

.sector-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: var(--purple);
  width: 90px;
  height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(65, 105, 225, 0.1) 0%, rgba(147, 112, 219, 0.1) 100%);
  border: 2px solid rgba(65, 105, 225, 0.3);
}

.sector-card h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.sector-card ul {
  list-style: none;
  margin-bottom: 1.5rem;
  text-align: left;
  width: 100%;
  flex-grow: 1;
}

.sector-card li {
  padding: 0.5rem 0;
  color: var(--text-light);
  position: relative;
  padding-left: 1.5rem;
}

.sector-card li:before {
  content: "\f00c";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  color: var(--green);
  font-size: 0.8rem;
  position: absolute;
  left: 0;
  top: 0.6rem;
}

.market-size {
  background: var(--gradient-teal);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-block;
}

.market-advantage {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
  text-align: center;
}

.market-advantage h3 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.advantages {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.advantage {
  padding: 0.8rem 1.5rem;
  background: var(--bg-light);
  border-radius: 20px;
  font-weight: 500;
  border: 1px solid var(--border-light);
}

/* Revenue Model */
.revenue-streams {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.revenue-card {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
}

.revenue-card.primary {
  background: linear-gradient(135deg, rgba(32, 178, 170, 0.05) 0%, rgba(65, 105, 225, 0.05) 100%);
  border: 2px solid var(--teal);
}

.revenue-card h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.revenue-card h4 {
  font-size: 1.1rem;
  margin-bottom: 0.8rem;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.revenue-details {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.revenue-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: var(--bg-light);
  border-radius: 8px;
}

.revenue-secondary {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.revenue-secondary .revenue-card {
  padding: 1.5rem;
}

.revenue-principle {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
}

.revenue-principle h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: var(--text-dark);
}

.principles {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.principle {
  padding: 1rem;
  background: var(--bg-light);
  border-radius: 8px;
  border-left: 4px solid var(--teal);
}

/* Competition */
.competition-comparison {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 2rem;
  align-items: center;
  margin-bottom: 3rem;
}

.comparison-item {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
}

.comparison-item h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  text-align: center;
  color: var(--text-dark);
}

.vs {
  font-size: 2rem;
  font-weight: bold;
  color: var(--teal);
  text-align: center;
}

.comparison-points {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.point {
  padding: 0.8rem;
  border-radius: 8px;
  font-size: 0.95rem;
}

.point.negative {
  background: rgba(231, 76, 60, 0.1);
  border-left: 4px solid #e74c3c;
  color: #c0392b;
}

.point.positive {
  background: linear-gradient(135deg, rgba(32, 178, 170, 0.1) 0%, rgba(65, 105, 225, 0.1) 100%);
  border-left: 4px solid var(--purple);
  color: #1976D2;
}

.unique-advantages {
  background: linear-gradient(135deg, rgba(32, 178, 170, 0.1) 0%, rgba(65, 105, 225, 0.1) 100%);
  border: 1px solid rgba(32, 178, 170, 0.3);
  border-radius: 16px;
  padding: 2rem;
}

.unique-advantages h3 {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  text-align: center;
  color: var(--text-dark);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.advantage-item {
  text-align: center;
  padding: 2rem;
  background: white;
  border-radius: 12px;
  box-shadow: var(--shadow-light);
  border: 1px solid var(--border-light);
  transition: transform 0.3s ease;
}

.advantage-item:hover {
  transform: translateY(-5px);
}

.advantage-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: var(--violet);
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(147, 112, 219, 0.1) 0%, rgba(32, 178, 170, 0.1) 100%);
  border: 2px solid rgba(147, 112, 219, 0.3);
  margin: 0 auto 1.5rem auto;
}

.advantage-item h4 {
  font-size: 1.2rem;
  margin-bottom: 0.8rem;
  color: var(--text-dark);
}

.advantage-item p {
  color: var(--text-light);
  line-height: 1.6;
}

/* Team */
.team-intro {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
  margin-bottom: 3rem;
  text-align: center;
}

.team-mission h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.team-mission p {
  font-size: 1.1rem;
  color: var(--text-light);
  font-style: italic;
}

.team-strengths {
  margin-bottom: 3rem;
}

.team-strengths h3 {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  text-align: center;
  color: var(--text-dark);
}

.strengths-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.strength-item {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
  text-align: center;
}

.strength-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.strength-item h4 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.strength-item p {
  color: var(--text-light);
}

.team-commitment {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
}

.team-commitment h3 {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  text-align: center;
  color: var(--text-dark);
}

.commitment-items {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.commitment {
  padding: 1rem;
  background: var(--bg-light);
  border-radius: 8px;
  border-left: 4px solid var(--teal);
  font-weight: 500;
}

/* Roadmap - Compact Layout */
.roadmap {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.roadmap-phase {
  background: white;
  padding: 1.5rem;
  border-radius: 16px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
  flex: 1;
  min-width: 280px;
  max-width: 320px;
}

.phase-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.phase-number {
  width: 35px;
  height: 35px;
  background: var(--gradient-teal);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.phase-header h3 {
  font-size: 1.1rem;
  color: var(--text-dark);
}

.phase-items {
  list-style: none;
}

.phase-items li {
  padding: 0.4rem 0;
  color: var(--text-light);
  border-bottom: 1px solid var(--border-light);
  font-size: 0.9rem;
  line-height: 1.4;
}

.phase-items li:last-child {
  border-bottom: none;
}

.phase-items li:before {
  content: "→ ";
  color: var(--teal);
  font-weight: bold;
}

.roadmap-arrow {
  font-size: 1.8rem;
  color: var(--teal);
  font-weight: bold;
  align-self: center;
}

.immediate-opportunities {
  background: linear-gradient(135deg, rgba(32, 178, 170, 0.1) 0%, rgba(65, 105, 225, 0.1) 100%);
  border: 1px solid rgba(32, 178, 170, 0.3);
  border-radius: 16px;
  padding: 1.5rem;
}

.immediate-opportunities h3 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  text-align: center;
  color: var(--text-dark);
}

.opportunities {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.opportunity {
  padding: 0.8rem;
  background: white;
  border-radius: 8px;
  border-left: 4px solid var(--teal);
  font-size: 0.9rem;
}

/* Call to Action Slide */
.cta-slide {
  text-align: center;
  padding: 4rem 2rem;
  justify-content: center;
}

.cta-content {
  margin-bottom: 0;
}

.cta-title {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 2rem;
  line-height: 1.2;
}

.cta-description {
  font-size: 1.5rem;
  color: var(--text-light);
  margin-bottom: 3rem;
}

.cta-stats {
  display: flex;
  justify-content: center;
  gap: 4rem;
  margin-bottom: 3rem;
}

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

.stat-large {
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.stat-desc {
  color: var(--text-light);
  font-size: 1rem;
  margin-top: 0.5rem;
}

.cta-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  margin-bottom: 2rem;
}

.link-item {
  font-size: 1.1rem;
  color: var(--text-light);
}

.link-item strong {
  color: var(--text-dark);
  font-weight: 600;
}

/* Thank You Slide */
.thank-you-slide {
  text-align: center;
  padding: 4rem 2rem;
  justify-content: center;
  background: linear-gradient(135deg, rgba(32, 178, 170, 0.03) 0%, rgba(65, 105, 225, 0.03) 100%);
}

.thank-you-content {
  max-width: 800px;
  margin: 0 auto;
}

.thank-you-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
}

.thank-you-logo {
  width: 140px;
  height: 140px;
  border-radius: 20px;
  object-fit: contain;
  display: block;
  margin: 0 auto 0px auto;
}

.thank-you-title {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: 2rem;
  line-height: 1.2;
  margin-top: 0;
}

.thank-you-subtitle {
  font-size: 1.5rem;
  color: var(--text-light);
  margin-bottom: 4rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-bottom: 4rem;
  align-items: center;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 1.2rem;
  color: var(--text-dark);
  background: white;
  padding: 1rem 2rem;
  border-radius: 12px;
  box-shadow: var(--shadow-light);
  border: 1px solid var(--border-light);
  min-width: 300px;
  justify-content: flex-start;
}

.contact-item i {
  font-size: 1.5rem;
  color: var(--teal);
  width: 30px;
  text-align: center;
}

.hackathon-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  background: var(--gradient-teal);
  color: white;
  padding: 1rem 2rem;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 600;
  box-shadow: var(--shadow-medium);
  cursor: pointer;
  transition: all 0.3s ease;
  user-select: none;
}

.hackathon-badge:hover {
  background: var(--gradient-purple);
  transform: translateY(-2px);
  box-shadow: var(--shadow-large);
}

.hackathon-badge:active {
  transform: translateY(0);
}

.hackathon-badge i {
  font-size: 1.3rem;
}

/* Navigation Dots */
.nav-dots {
  position: fixed;
  right: 2rem;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  z-index: 1000;
}

.nav-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(32, 178, 170, 0.3);
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.nav-dot.active {
  background: var(--teal);
  transform: scale(1.2);
  border-color: white;
  box-shadow: 0 0 0 2px var(--teal);
}

.nav-dot:hover {
  background: var(--teal);
  transform: scale(1.1);
}

/* Responsive Design */
@media (max-width: 1200px) {
  .slide-content {
    padding: 1.5rem;
  }
  
  .hero-title {
    font-size: 3.5rem;
  }
  
  .slide-title {
    font-size: 2.5rem;
  }
  
  .demo-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .features-showcase {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .revenue-streams {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .competition-comparison {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .vs {
    transform: rotate(90deg);
    margin: 1rem 0;
  }
}

@media (max-width: 768px) {
  .nav-container {
    padding: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
  }
  
  .nav-logo-img {
    width: 24px;
    height: 24px;
  }
  
  .nav-progress {
    order: 3;
    width: 100%;
    margin: 0;
  }
  
  .title-header {
    flex-direction: column;
    gap: 1.5rem;
  }
  
  .title-logo {
    width: 80px;
    height: 80px;
    border-radius: 16px;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.5rem;
  }
  
  .slide-title {
    font-size: 2rem;
  }
  
  .thank-you-header {
    flex-direction: column;
    gap: 1.5rem;
  }
  
  .thank-you-logo {
    width: 60px;
    height: 60px;
    border-radius: 12px;
  }
  
  .thank-you-title {
    font-size: 3rem;
  }
  
  .code-images-container {
    flex-direction: column;
    gap: 1rem;
    height: calc(100vh - 130px);
    overflow: hidden;
  }
  
  .code-image-wrapper {
    max-width: 100%;
    height: auto;
  }
  
  .code-image-wrapper.large {
    max-width: 100%;
  }
  
  .code-screenshot {
    max-height: 45vh;
  }
  
  .code-caption {
    font-size: 0.9rem;
    margin-top: 0.5rem;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 2rem;
  }
  
  .solution-visual {
    flex-direction: column;
  }
  
  .arrow {
    transform: rotate(90deg);
    margin: 0.5rem 0;
  }
  
  .roadmap {
    flex-direction: column;
  }
  
  .roadmap-arrow {
    transform: rotate(90deg);
    margin: 0.5rem 0;
  }
  
  .cta-stats {
    flex-direction: column;
    gap: 2rem;
  }
  
  .cta-title {
    font-size: 2.5rem;
  }
  
  .nav-dots {
    display: none;
  }
  
  .presentation-btn {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
  }
}

/* Presentation Mode Mobile Styles */
@media (max-width: 768px) {
  .presentation-header {
    padding: 0.8rem 1rem;
    flex-direction: column;
    gap: 1rem;
  }
  
  .presentation-controls {
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .pres-btn {
    padding: 0.5rem 0.8rem;
    font-size: 0.8rem;
  }
  
  .presentation-content {
    padding: 0;
  }
  
  .presentation-content .slide-content {
    width: 100vw;
    height: 100vh;
    padding: 2rem 1rem;
    font-size: 0.8rem;
  }
  
  .presentation-content .slide-title {
    font-size: min(2rem, 6vh);
    margin-bottom: min(1rem, 2vh);
  }
  
  .presentation-content .hero-title {
    font-size: min(2.8rem, 7vh);
    margin-bottom: min(0.8rem, 1.5vh);
  }
  
  .presentation-content .hero-subtitle {
    font-size: min(1.5rem, 3.5vh);
    margin-bottom: min(1rem, 2vh);
  }
  
  .presentation-content .hero-description {
    font-size: min(1.1rem, 2.8vh);
    margin-bottom: min(1.5rem, 3vh);
  }
  
  .presentation-content .problems-grid,
  .presentation-content .market-sectors,
  .presentation-content .tech-grid,
  .presentation-content .strengths-grid {
    gap: min(1.5rem, 2vh);
    grid-template-columns: 1fr;
  }
  
  .presentation-content .features-grid-horizontal {
    grid-template-columns: repeat(2, 1fr);
    gap: min(1.5rem, 2vh);
  }
  
  .presentation-content .solution-visual {
    flex-direction: column;
    margin: min(2rem, 3vh) 0;
    gap: min(1rem, 1.5vh);
  }
  
  .presentation-content .demo-container {
    grid-template-columns: 1fr;
    gap: min(2rem, 3vh);
  }
  
  .presentation-content .hero-stats {
    flex-direction: column;
    gap: min(2rem, 3vh);
    margin-top: min(1.5rem, 2vh);
  }
  
  .presentation-content .roadmap {
    flex-direction: column;
    gap: min(1.5rem, 2vh);
  }
  
  .presentation-content .cta-stats {
    flex-direction: column;
    gap: min(2.5rem, 4vh);
  }
  
  .presentation-content p,
  .presentation-content li {
    font-size: min(1rem, 2.3vh);
    line-height: 1.4;
  }
  
  .presentation-content h3 {
    font-size: min(1.2rem, 2.8vh);
  }
  
  .presentation-content h4 {
    font-size: min(1.1rem, 2.5vh);
  }
  
  .presentation-content .problem-card,
  .presentation-content .sector-card,
  .presentation-content .tech-category,
  .presentation-content .strength-item,
  .presentation-content .feature-card {
    padding: min(1.2rem, 2vh);
    min-height: min(200px, 25vh);
  }
  
  .presentation-content .revenue-streams,
  .presentation-content .features-showcase,
  .presentation-content .features-grid {
    grid-template-columns: 1fr;
    gap: min(2rem, 3vh);
  }

  .presentation-content .competition-comparison {
    grid-template-columns: 1fr;
    gap: min(2rem, 3vh);
  }

  .presentation-content .vs {
    transform: rotate(90deg);
    margin: min(1rem, 1.5vh) 0;
    font-size: min(2rem, 4vh);
  }
  
  .presentation-content .advantage-item {
    padding: min(1.5rem, 2vh);
  }
  
  .presentation-content .thank-you-title {
    font-size: min(3rem, 7vh);
  }
  
  .presentation-content .contact-info {
    gap: min(1.5rem, 2vh);
  }
  
  .presentation-content .contact-item {
    min-width: auto;
    width: 100%;
    max-width: 350px;
    padding: min(0.8rem, 1.2vh) min(1.5rem, 2vh);
  }
  
  /* 모바일 핵심 기능 슬라이드 최적화 */
  .presentation-content .feature-card.featured {
    padding: min(0.8rem, 1.2vh);
  }
  
  .presentation-content .feature-header h3 {
    font-size: min(1rem, 2vh);
  }
  
  .presentation-content .feature-card p {
    font-size: min(0.8rem, 1.6vh);
    margin-bottom: min(0.8rem, 1.2vh);
  }
  
  .presentation-content .stake-example {
    font-size: min(0.7rem, 1.4vh);
    flex-direction: column;
    align-items: flex-start;
    gap: min(0.3rem, 0.5vh);
  }
  
  .presentation-content .features-grid {
    gap: min(1rem, 1.5vh);
  }
  
  .presentation-content .features-grid .feature-card {
    padding: min(0.8rem, 1.2vh);
  }
  
  .presentation-content .features-grid .feature-card h4 {
    font-size: min(0.9rem, 1.8vh);
    margin-bottom: min(0.4rem, 0.6vh);
  }
  
  .presentation-content .features-grid .feature-card p {
    font-size: min(0.75rem, 1.5vh);
  }
  
  /* 모바일 수익 모델 슬라이드 최적화 */
  .presentation-content .revenue-card {
    padding: min(1rem, 1.5vh);
  }
  
  .presentation-content .revenue-card h3 {
    font-size: min(1rem, 2vh);
    margin-bottom: min(0.8rem, 1.2vh);
  }
  
  .presentation-content .revenue-card h4 {
    font-size: min(0.85rem, 1.7vh);
    margin-bottom: min(0.5rem, 0.8vh);
  }
  
  .presentation-content .revenue-item {
    padding: min(0.6rem, 1vh);
    font-size: min(0.75rem, 1.5vh);
    flex-direction: column;
    align-items: flex-start;
    gap: min(0.2rem, 0.4vh);
  }
  
  .presentation-content .revenue-secondary {
    gap: min(1rem, 1.5vh);
  }
  
  .presentation-content .revenue-principle {
    padding: min(1rem, 1.5vh);
  }
  
  .presentation-content .principles {
    gap: min(0.6rem, 1vh);
  }
  
  .presentation-content .principle {
    padding: min(0.6rem, 1vh);
    font-size: min(0.8rem, 1.6vh);
  }
  
  .presentation-dots {
    gap: 0.6rem;
    bottom: 3rem;
  }
  
  .presentation-dot {
    width: 10px;
    height: 10px;
  }
  
  /* 모바일에서는 터치로 헤더/푸터 표시 */
  .presentation-header,
  .presentation-footer,
  .presentation-dots {
    opacity: 1;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.slide.active .slide-content > * {
  animation: fadeInUp 0.6s ease forwards;
}

/* Print styles */
@media print {
  .nav, .nav-dots {
    display: none;
  }
  
  .slide {
    display: block !important;
    opacity: 1 !important;
    transform: none !important;
    page-break-after: always;
  }
  
  .slides-container {
    padding-top: 0;
  }
}


.slide-mini-title {
  font-size: 16px;
  align-items: center;
  text-align: center;
  margin: 0 auto 15px auto;
  border: 1px solid #68cbc5;
  width: 300px;
  border-radius: 5px;
  background-color: #9bc9cd8c;
  font-weight: 500;
  color: #1aa099;
  display: block;
}