:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #818cf8;
  --secondary: #22d3ee;
  --accent: #f43f5e;
  --bg-dark: #0f172a;
  --bg-card: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: rgba(255, 255, 255, 0.1);
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
  --gradient-secondary: linear-gradient(135deg, #22d3ee 0%, #3b82f6 100%);
  --gradient-hero: linear-gradient(180deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  outline: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-outline:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: var(--primary);
}

.btn-large {
  padding: 16px 32px;
  font-size: 16px;
}

.btn .arrow {
  transition: transform 0.3s ease;
}

.btn:hover .arrow {
  transform: translateX(4px);
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.hero {
  position: relative;
  min-height: 100vh;
  padding: 80px 0;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
}

.bg-circle {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
}

.bg-circle.c1 {
  width: 500px;
  height: 500px;
  background: var(--primary);
  top: -100px;
  right: -100px;
}

.bg-circle.c2 {
  width: 400px;
  height: 400px;
  background: var(--secondary);
  bottom: -100px;
  left: -100px;
}

.bg-circle.c3 {
  width: 300px;
  height: 300px;
  background: var(--accent);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.bg-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.hero-content {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 80px;
  align-items: center;
  min-height: calc(100vh - 160px);
}

.hero-text {
  z-index: 1;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: 24px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--secondary);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
  font-size: clamp(42px, 7vw, 64px);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
}

.hero-title span {
  display: block;
}

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

.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 500px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding: 24px;
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.stat-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 14px;
  color: var(--text-muted);
}

.hero-visual {
  position: relative;
  z-index: 1;
}

.main-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid var(--border-color);
}

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

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: all 0.3s ease;
}

.dot.active {
  background: var(--secondary);
  box-shadow: 0 0 12px var(--secondary);
}

.card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
}

.card-body {
  padding: 24px;
}

.chart {
  height: 140px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 24px;
}

.chart-bars {
  display: flex;
  width: 100%;
  gap: 12px;
  align-items: flex-end;
  height: 100%;
}

.bar {
  flex: 1;
  background: var(--gradient-primary);
  border-radius: 6px 6px 0 0;
  animation: barGrow 0.8s ease-out forwards;
  opacity: 0;
}

@keyframes barGrow {
  from { height: 0; opacity: 0; }
  to { opacity: 1; }
}

.metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.metric-item {
  padding: 12px;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-md);
}

.metric-label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.metric-value {
  display: block;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.metric-value.up {
  color: #22c55e;
}

.floating-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  animation: float 4s ease-in-out infinite;
}

.floating-card .icon {
  font-size: 20px;
}

.floating-card .text {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.card-1 {
  top: -20px;
  right: -40px;
  animation-delay: 0s;
}

.card-2 {
  bottom: 60px;
  right: -60px;
  animation-delay: 1.3s;
}

.card-3 {
  bottom: -10px;
  left: -40px;
  animation-delay: 2.6s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.features {
  padding: 100px 0;
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  color: var(--primary-light);
  font-size: 24px;
  transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
  background: var(--gradient-primary);
  color: white;
}

.feature-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.about {
  padding: 100px 0;
  background: linear-gradient(180deg, transparent 0%, rgba(30, 41, 59, 0.3) 100%);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-text .section-title {
  text-align: left;
  margin-bottom: 16px;
}

.about-text .section-desc {
  text-align: left;
  margin: 0 0 32px;
}

.benefits {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

.benefit-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.check-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(34, 211, 238, 0.1);
  border-radius: 50%;
  color: var(--secondary);
  font-size: 14px;
  font-weight: 700;
}

.benefit-item span {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

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

.step {
  display: flex;
  gap: 20px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
}

.step:hover {
  border-color: var(--primary);
  transform: translateX(8px);
}

.step-number {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  font-size: 16px;
  font-weight: 800;
  color: white;
  flex-shrink: 0;
}

.step-content h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.step-content p {
  font-size: 14px;
  color: var(--text-secondary);
}

.testimonials {
  padding: 100px 0;
}

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

.testimonial-card {
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
}

.testimonial-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
}

.stars {
  margin-bottom: 16px;
}

.stars span {
  color: #fbbf24;
  font-size: 16px;
}

.testimonial-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: 50%;
  font-size: 18px;
  font-weight: 700;
  color: white;
}

.author-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.author-title {
  font-size: 13px;
  color: var(--text-muted);
}

.pricing {
  padding: 100px 0;
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.3) 0%, transparent 100%);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card {
  position: relative;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  transition: all 0.3s ease;
}

.pricing-card:hover {
  border-color: var(--primary);
  transform: translateY(-8px);
}

.pricing-card.pro {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 16px;
  background: var(--gradient-primary);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: white;
}

.pricing-header {
  text-align: center;
  margin-bottom: 32px;
}

.pricing-header h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.currency {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-secondary);
}

.amount {
  font-size: 48px;
  font-weight: 800;
  color: var(--text-primary);
}

.period {
  font-size: 14px;
  color: var(--text-muted);
}

.features-list {
  list-style: none;
  margin-bottom: 32px;
}

.features-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  font-size: 14px;
  color: var(--text-secondary);
}

.features-list li::before {
  content: '✓';
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(34, 211, 238, 0.1);
  border-radius: 50%;
  color: var(--secondary);
  font-size: 12px;
  font-weight: 700;
}

.pricing-card .btn {
  width: 100%;
  justify-content: center;
}

.cta {
  padding: 120px 0;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-primary);
  opacity: 0.1;
}

.cta-content {
  position: relative;
  text-align: center;
}

.cta-content h2 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.cta-content p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.footer {
  padding: 60px 0 30px;
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.footer-brand .logo svg {
  width: 32px;
  height: 32px;
  color: var(--primary);
}

.footer-brand .logo span {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-primary);
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.link-group h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.link-group ul {
  list-style: none;
}

.link-group li {
  margin-bottom: 12px;
}

.link-group a {
  font-size: 14px;
  color: var(--text-muted);
  transition: color 0.2s;
  text-decoration: none;
}

.link-group a:hover {
  color: var(--primary-light);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  color: var(--text-muted);
  transition: all 0.3s;
}

.social-links a:hover {
  background: var(--primary);
  color: white;
}

.social-links svg {
  width: 16px;
  height: 16px;
}

@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .stats {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .floating-card {
    display: none;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

.animate-hidden {
  opacity: 0;
  transform: translateY(20px);
}

.animate-in {
  animation: fadeInUp 0.6s ease-out forwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.feature-card.animate-in { animation-delay: 0.1s; }
.feature-card:nth-child(2).animate-in { animation-delay: 0.2s; }
.feature-card:nth-child(3).animate-in { animation-delay: 0.3s; }
.feature-card:nth-child(4).animate-in { animation-delay: 0.4s; }

.step.animate-in { animation-delay: 0.1s; }
.step:nth-child(2).animate-in { animation-delay: 0.2s; }
.step:nth-child(3).animate-in { animation-delay: 0.3s; }
.step:nth-child(4).animate-in { animation-delay: 0.4s; }

.testimonial-card.animate-in { animation-delay: 0.1s; }
.testimonial-card:nth-child(2).animate-in { animation-delay: 0.2s; }
.testimonial-card:nth-child(3).animate-in { animation-delay: 0.3s; }

.pricing-card.animate-in { animation-delay: 0.1s; }
.pricing-card:nth-child(2).animate-in { animation-delay: 0.2s; }
.pricing-card:nth-child(3).animate-in { animation-delay: 0.3s; }

@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .stats {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .floating-card {
    display: none;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }
  
  .hero {
    padding: 60px 0;
  }
  
  .hero-title {
    font-size: clamp(32px, 8vw, 48px);
  }
  
  .hero-desc {
    font-size: 16px;
  }
  
  .hero-actions {
    flex-direction: column;
  }
  
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
  
  .features {
    padding: 60px 0;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .about {
    padding: 60px 0;
  }
  
  .benefits {
    grid-template-columns: 1fr;
  }
  
  .testimonials {
    padding: 60px 0;
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing {
    padding: 60px 0;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .cta {
    padding: 80px 0;
  }
  
  .cta-content h2 {
    font-size: clamp(24px, 6vw, 36px);
  }
  
  .cta-actions {
    flex-direction: column;
  }
  
  .cta-actions .btn {
    width: 100%;
    justify-content: center;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
  }
}