:root {
  /* Colors */
  --color-bg-base: #040814;
  --color-bg-darker: #02050D;
  --color-bg-card: rgba(18, 25, 43, 0.6);
  --color-primary: #0088FF;
  --color-teal: #00F2FE;
  --color-text-main: #F8F9FA;
  --color-text-muted: #A0ABC0;
  
  /* Fonts */
  --font-en: 'Outfit', 'Inter', sans-serif;
  --font-ko: 'Noto Sans KR', sans-serif;
  
  /* Utilities */
  --transition: all 0.3sease;
  --radius-lg: 24px;
  --radius-md: 16px;
  --glass-border: rgba(255, 255, 255, 0.08);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-en);
}

body {
  background-color: var(--color-bg-base);
  color: var(--color-text-main);
  line-height: 1.6;
  font-family: var(--font-ko);
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

h1, h2, h3, h4, .font-en {
  font-family: var(--font-en);
}

.text-gradient {
  background: linear-gradient(90deg, var(--color-teal), var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.text-teal {
  color: var(--color-teal);
}

.mb-4 { margin-bottom: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.text-center { text-align: center; }

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

.bg-darker {
  background-color: var(--color-bg-darker);
}

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

/* Glass & Buttons */
.glass-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(4, 8, 20, 0.7);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition);
}

.glass-nav.scrolled {
  padding: 10px 0;
  background: rgba(4, 8, 20, 0.95);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}

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

.logo-icon {
  color: var(--color-teal);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-ko {
  font-weight: 700;
  font-size: 1.1rem;
  line-height: 1.2;
}

.logo-en {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 2px;
  color: var(--color-text-muted);
  font-weight: 500;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links li a {
  font-family: var(--font-en);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: var(--transition);
  position: relative;
}

.nav-links li a:hover {
  color: var(--color-teal);
}

.nav-links li a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-teal);
  transition: var(--transition);
}

.nav-links li a:hover::after {
  width: 100%;
}

.menu-btn {
  display: none;
  cursor: pointer;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 100px;
  font-weight: 600;
  font-family: var(--font-en);
  font-size: 1rem;
  transition: var(--transition);
  cursor: pointer;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(90deg, var(--color-primary), var(--color-teal));
  color: #fff;
  border: none;
  box-shadow: 0 8px 24px rgba(0, 136, 255, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 12px 32px rgba(0, 242, 254, 0.4);
  transform: translateY(-2px);
}

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

.btn-outline:hover {
  border-color: var(--color-teal);
  color: var(--color-teal);
  background: rgba(0, 242, 254, 0.05);
}


/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 24px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.05); /* Slight zoom for image */
  animation: slowZoom 20s ease infinite alternate;
}

@keyframes slowZoom {
  0% { transform: scale(1.02); }
  100% { transform: scale(1.08); }
}

.hero-bg .overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(4, 8, 20, 0.8), rgba(4, 8, 20, 0.95) 90%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 100px;
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.3);
  color: var(--color-teal);
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 2px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 40px;
  font-weight: 400;
  line-height: 1.8;
}

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

.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  opacity: 0.6;
}

.mouse {
  width: 26px;
  height: 42px;
  border: 2px solid #fff;
  border-radius: 20px;
  display: block;
  position: relative;
}

.wheel {
  width: 4px;
  height: 8px;
  background: #fff;
  border-radius: 2px;
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll 1.5s infinite;
}

@keyframes scroll {
  0% { top: 8px; opacity: 1; }
  100% { top: 20px; opacity: 0; }
}

/* Sections Global */
.section-header {
  margin-bottom: 64px;
}

.section-title {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.2;
}

.section-title span {
  font-weight: 300;
  color: var(--color-text-muted);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  font-weight: 300;
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text p {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  line-height: 1.8;
}

.about-text strong {
  color: #fff;
  font-weight: 500;
}

.ceo-title {
  font-size: 1.2rem;
  color: var(--color-teal);
  font-weight: 600;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--glass-border);
  padding: 32px 24px;
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 242, 254, 0.3);
  background: rgba(18, 25, 43, 0.8);
}

.feature-card .icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(0, 242, 254, 0.1);
  color: var(--color-teal);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-family: var(--font-en);
  font-size: 1.1rem;
  margin-bottom: 8px;
  font-weight: 600;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--glass-border);
  padding: 40px 24px;
  border-radius: var(--radius-lg);
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-teal), var(--color-primary));
  opacity: 0;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-8px);
  background: rgba(18, 25, 43, 0.9);
  border-color: rgba(0, 242, 254, 0.2);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: rgba(0, 242, 254, 0.05);
  color: var(--color-text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  color: var(--color-teal);
  background: rgba(0, 242, 254, 0.15);
  transform: scale(1.1);
}

.service-card .service-icon svg {
  width: 32px;
  height: 32px;
}

.service-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.service-card p {
  color: var(--color-text-muted);
  font-family: var(--font-en);
  font-size: 0.9rem;
}

/* Markets */
.market-slider {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  margin-top: 40px;
}

.market-item {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 16px 32px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
}

.market-item:hover {
  background: rgba(0, 242, 254, 0.08);
  border-color: var(--color-teal);
  color: var(--color-teal);
}

.market-item svg {
  width: 24px;
  height: 24px;
}

.market-item span {
  font-family: var(--font-en);
  font-weight: 500;
  font-size: 1rem;
  line-height: 1.2;
}

/* Network */
.network-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.stats-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.stats-list h4 {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.stats-list p {
  color: var(--color-text-muted);
}

.network-map {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 400px;
}

.huge-icon {
  width: 300px;
  height: 300px;
  stroke-width: 0.5px;
  opacity: 0.8;
  position: relative;
  z-index: 2;
  animation: spinSlow 30s linear infinite;
}

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

.glow-sphere {
  position: absolute;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.15) 0%, rgba(0, 136, 255, 0) 70%);
  border-radius: 50%;
  z-index: 1;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 24px;
}

.office-card {
  background: var(--color-bg-card);
  border: 1px solid var(--glass-border);
  padding: 32px;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

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

.office-type {
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: var(--color-teal);
  letter-spacing: 1px;
  margin-bottom: 16px;
  font-weight: 500;
}

.office-card h3 {
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.office-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.contact-info p {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  color: var(--color-text-main);
  font-family: var(--font-en);
  font-weight: 500;
}

.contact-info svg {
  width: 16px;
  color: var(--color-text-muted);
}

/* Footer */
.footer {
  border-top: 1px solid var(--glass-border);
  padding: 64px 0 32px;
  background: var(--color-bg-base);
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.footer-logo {
  max-width: 400px;
}

.footer-logo p {
  margin-top: 16px;
  color: var(--color-text-muted);
  font-family: var(--font-en);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--color-text-muted);
  font-family: var(--font-en);
  font-size: 0.9rem;
}

.footer-links a:hover {
  color: var(--color-teal);
}

/* Animations Tools */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
  .about-grid, .network-wrapper {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .menu-btn {
    display: block;
  }
  .hero-title {
    font-size: 2.8rem;
  }
  .hero-actions {
    flex-direction: column;
  }
  .about-features {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}