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

:root {
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --primary-color: #7c3aed;
  --transition-speed: 0.3s;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #fff;
  overflow-x: hidden;
  opacity: 0;
  transition: opacity 0.5s ease-in;
}

body.loaded {
  opacity: 1;
}

/* 스크롤 진행 바 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--primary-gradient);
  z-index: 10000;
  transition: width 0.1s ease-out;
}

/* Back to Top 버튼 */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--primary-gradient);
  color: white;
  border: none;
  border-radius: 50%;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(124, 58, 237, 0.4);
}

.back-to-top:active {
  transform: translateY(-2px);
}

/* Header */
header {
  background-color: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  background-color: rgba(255, 255, 255, 0.95);
}

header.scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  padding: 0.5rem 0;
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.logo img {
  height: 50px;
  width: auto;
}

.logo h1 {
  font-size: 1.8rem;
  color: #333;
  font-weight: 700;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: #555;
  font-weight: 500;
  transition: all 0.3s;
  position: relative;
  padding-bottom: 5px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-gradient);
  transition: width 0.3s ease;
}

.nav-links a:hover {
  color: #7c3aed;
}

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

.nav-links a.active {
  color: #7c3aed;
  font-weight: 600;
}

/* Language Switcher Dropdown */
.lang-switcher {
  position: relative;
  display: inline-block;
}

.lang-dropdown-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: white;
  border: 2px solid #e0e0e0;
  color: #555;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.3s;
  min-width: 120px;
  justify-content: space-between;
}

.lang-dropdown-btn:hover {
  border-color: #7c3aed;
  color: #7c3aed;
  box-shadow: 0 2px 8px rgba(124, 58, 237, 0.2);
}

.lang-dropdown-btn .current-lang {
  flex: 1;
  text-align: left;
}

.dropdown-arrow {
  transition: transform 0.3s;
}

.lang-switcher.active .dropdown-arrow {
  transform: rotate(180deg);
}

.lang-dropdown-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: white;
  border: 2px solid #e0e0e0;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s;
  z-index: 1000;
  min-width: 150px;
  overflow: hidden;
}

.lang-switcher.active .lang-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  width: 100%;
  padding: 0.7rem 1rem;
  border: none;
  background: white;
  color: #555;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lang-option:hover {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.lang-option.active {
  background: #f0f0f0;
  font-weight: 600;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

/* Hero Section */
.hero {
  margin-top: 80px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 8rem 2rem;
  text-align: center;
}

.hero .hero-main-title {
  font-size: 4rem;
  margin-bottom: 2rem;
  font-weight: 800;
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease-out;
  letter-spacing: -1px;
}

.hero .hero-large-text {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease-out 0.2s both;
  line-height: 1.3;
}

.hero h2 {
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 700;
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease-out;
}

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

.hero p {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  opacity: 0.95;
}

.hero .subtitle {
  font-size: 1.3rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease-out 0.4s both;
}

/* Hero Buttons */
.hero-buttons {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin-top: 3rem;
  position: relative;
  z-index: 1;
  animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 50px;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.hero-btn-primary {
  background: white;
  color: #667eea;
  border: 2px solid white;
}

.hero-btn-primary:hover {
  background: transparent;
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 6px 25px rgba(255, 255, 255, 0.3);
}

.hero-btn-secondary {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: 2px solid white;
  backdrop-filter: blur(10px);
}

.hero-btn-secondary:hover {
  background: white;
  color: #667eea;
  transform: translateY(-3px);
  box-shadow: 0 6px 25px rgba(255, 255, 255, 0.3);
}

.hero-btn svg {
  width: 20px;
  height: 20px;
}

/* Stats Section */
.stats {
  background-color: #f8f9fa;
  padding: 8rem 2rem 5rem 2rem;
  margin-top: 0;
}

.stats-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  text-align: center;
}

@media (max-width: 768px) {
  .stats-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.stat-item {
  position: relative;
}

.stat-item h3 {
  font-size: 2.5rem;
  color: #7c3aed;
  margin-bottom: 0.5rem;
  font-weight: 700;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-item p {
  color: #666;
  font-size: 1.1rem;
  font-weight: 500;
}

/* MyData Section */
.mydata-section {
  padding: 6rem 2rem;
  background: linear-gradient(135deg, #f5f7fa 0%, #e8eef5 100%);
}

.mydata-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
}

.mydata-box {
  background: white;
  padding: 3rem 2.5rem;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.mydata-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.mydata-box:hover::before {
  transform: scaleX(1);
}

.mydata-box:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 50px rgba(124, 58, 237, 0.2);
}

.mydata-icon {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  display: inline-block;
  animation: float 3s ease-in-out infinite;
}

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

.mydata-box h3 {
  font-size: 1.5rem;
  color: #333;
  margin-bottom: 1rem;
  font-weight: 700;
  line-height: 1.4;
}

.mydata-box p {
  color: #666;
  line-height: 1.8;
  font-size: 1rem;
}

/* Partners Section */
.partners {
  padding: 4rem 2rem;
  text-align: center;
  background-color: #fff;
}

.partners h2 {
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: #333;
}

.partners-logos {
  max-width: 1600px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.partners-image {
  width: 100%;
  height: auto;
  max-width: 1500px;
  display: block;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .partners-image {
    max-width: 100%;
  }
}

/* Features Section */
.features {
  padding: 5rem 2rem;
  background-color: #f8f9fa;
}

.features h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 4rem;
  color: #333;
}

/* 섹션 타이틀 애니메이션 */
.section-title {
  position: relative;
  display: inline-block;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.section-title.title-visible {
  opacity: 1;
  transform: translateY(0);
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80px;
  height: 4px;
  background: var(--primary-gradient);
  border-radius: 2px;
  transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s;
}

.section-title.title-visible::after {
  transform: translateX(-50%) scaleX(1);
}

.features-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
}

.feature-card {
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(124, 58, 237, 0.1), transparent);
  transition: left 0.5s;
}

.feature-card:hover::before {
  left: 100%;
}

.feature-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 12px 30px rgba(124, 58, 237, 0.3);
  border: 1px solid rgba(124, 58, 237, 0.2);
}

/* 애니메이션 클래스 */
.animate-element {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-element.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.feature-card h3 {
  font-size: 1.5rem;
  color: #7c3aed;
  margin-bottom: 1rem;
}

.feature-card p {
  color: #666;
  line-height: 1.8;
}

/* Technology Section */
.technology {
  padding: 5rem 2rem;
  background-color: #fff;
}

.technology h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 4rem;
  color: #333;
}

.tech-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
}

.tech-card {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 2rem;
  border-radius: 10px;
  transition: transform 0.3s;
}

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

.tech-card h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.tech-card p {
  line-height: 1.8;
  opacity: 0.95;
}

/* Solutions Section */
.solutions {
  padding: 5rem 2rem;
  background-color: #f8f9fa;
}

.solutions h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 2rem;
  color: #333;
}

.solutions-subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: #666;
  max-width: 900px;
  margin: 0 auto 4rem;
  line-height: 1.8;
}

.solutions-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 3rem;
}

.solution-card {
  background: white;
  padding: 2.5rem;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.solution-card:hover::before {
  transform: scaleX(1);
}

.solution-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 40px rgba(124, 58, 237, 0.2);
  border-color: rgba(124, 58, 237, 0.3);
}

.solution-card .badge {
  display: inline-block;
  background-color: #7c3aed;
  color: white;
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.solution-card h3 {
  font-size: 1.8rem;
  color: #333;
  margin-bottom: 1rem;
}

.solution-card p {
  color: #666;
  line-height: 1.8;
}

/* Case Studies Section */
.case-studies {
  padding: 5rem 2rem;
  background-color: #fff;
}

.case-studies h2 {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 4rem;
  color: #333;
}

.cases-grid {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

@media (max-width: 1024px) {
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .cases-grid {
    grid-template-columns: 1fr;
  }
}

.case-card {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  color: white;
  padding: 2.5rem;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.case-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 100px;
  height: 100px;
  background: radial-gradient(circle, rgba(255,255,255,0.2) 0%, transparent 70%);
  border-radius: 50%;
  transform: translate(50%, 50%);
  transition: transform 0.6s ease;
}

.case-card:hover::after {
  transform: translate(30%, 30%) scale(1.5);
}

.case-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 20px 50px rgba(245, 87, 108, 0.4);
}

.case-card h3 {
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.case-card p {
  line-height: 1.8;
  opacity: 0.95;
}

/* News Section */
.news-section {
  padding: 5rem 2rem;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.news-section h2 {
  text-align: center;
  font-size: 2.8rem;
  margin-bottom: 1rem;
  color: #333;
  font-weight: 700;
}

.news-subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: #666;
  margin-bottom: 4rem;
  font-weight: 400;
}

.news-grid {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.news-card {
  background: white;
  border-radius: 12px;
  padding: 1.2rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(124, 58, 237, 0.1);
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 140px;
}

.news-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, #7c3aed 0%, #a78bfa 100%);
  transform: scaleY(0);
  transition: transform 0.3s ease;
}

.news-card:hover::before {
  transform: scaleY(1);
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(124, 58, 237, 0.2);
  border-color: rgba(124, 58, 237, 0.3);
}

.news-date {
  display: inline-block;
  font-size: 0.75rem;
  color: #7c3aed;
  font-weight: 600;
  margin-bottom: 0.6rem;
  padding: 0.25rem 0.7rem;
  background: rgba(124, 58, 237, 0.1);
  border-radius: 12px;
  width: fit-content;
}

.news-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #222;
  margin-bottom: 0.7rem;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}

.news-excerpt {
  display: none;
}

.news-source {
  font-size: 0.75rem;
  color: #999;
  font-weight: 500;
  margin-bottom: 0.6rem;
  padding-left: 1rem;
  position: relative;
}

.news-source::before {
  content: '📰';
  position: absolute;
  left: 0;
  font-size: 0.75rem;
}

.news-link {
  display: inline-flex;
  align-items: center;
  color: #7c3aed;
  font-weight: 600;
  text-decoration: none;
  font-size: 0.85rem;
  transition: all 0.3s ease;
  margin-top: auto;
}

.news-link:hover {
  color: #6d28d9;
  transform: translateX(4px);
}

@media (max-width: 1200px) {
  .news-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 1024px) {
  .news-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .news-grid {
    grid-template-columns: 1fr;
  }
  
  .news-section h2 {
    font-size: 2.2rem;
  }
  
  .news-subtitle {
    font-size: 1rem;
  }
}

/* Team Section */
.team {
  padding: 5rem 2rem;
  background-color: #f8f9fa;
  text-align: center;
}

.team h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: #333;
}

.team p {
  font-size: 1.2rem;
  color: #666;
  max-width: 800px;
  margin: 0 auto 3rem;
}

.team-images {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.team-image {
  width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.team-image:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* Contact Section */
.contact {
  padding: 5rem 2rem;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  text-align: center;
}

.contact h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.contact p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

.contact a {
  color: white;
  font-size: 1.3rem;
  text-decoration: none;
  border-bottom: 2px solid white;
  padding-bottom: 0.2rem;
  transition: opacity 0.3s;
}

.contact a:hover {
  opacity: 0.8;
}

/* Footer */
footer {
  background-color: #1a1a1a;
  color: #fff;
  padding: 2rem;
  text-align: center;
}

footer p {
  opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero {
    padding: 6rem 2rem;
  }
  
  .hero .hero-main-title {
    font-size: 3rem;
  }
  
  .hero .hero-large-text {
    font-size: 2.5rem;
  }
  
  .hero h2 {
    font-size: 2.5rem;
  }
  
  .stat-item h3 {
    font-size: 2rem;
  }
  
  .mydata-grid {
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 5rem 1.5rem;
  }
  
  .hero .hero-main-title {
    font-size: 2.2rem;
  }
  
  .hero .hero-large-text {
    font-size: 1.8rem;
  }
  
  .hero h2 {
    font-size: 2rem;
  }
  
  .hero p {
    font-size: 1.2rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    gap: 1rem;
  }
  
  .hero-btn {
    width: 100%;
    justify-content: center;
    padding: 1rem 2rem;
  }
  
  .stats {
    padding: 5rem 1.5rem 3rem 1.5rem;
  }
  
  .mydata-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .mydata-box {
    padding: 2rem 1.5rem;
  }
  
  .team-images {
    gap: 1.5rem;
  }
  
  .features-grid,
  .tech-grid,
  .solutions-grid,
  .cases-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  nav {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }
  
  .nav-right {
    flex-direction: column;
    gap: 1rem;
    width: 100%;
  }
  
  .nav-links {
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .lang-switcher {
    width: 100%;
    max-width: 200px;
    margin: 0 auto;
  }
  
  .lang-dropdown-btn {
    font-size: 0.85rem;
    padding: 0.4rem 0.8rem;
    width: 100%;
  }
  
  .lang-dropdown-menu {
    width: 100%;
    right: 0;
  }
  
  .back-to-top {
    bottom: 1rem;
    right: 1rem;
    width: 45px;
    height: 45px;
    font-size: 1.3rem;
  }
  
  .stat-item h3 {
    font-size: 2rem;
  }
  
  .section-title {
    font-size: 2rem !important;
  }
}

@media (max-width: 480px) {
  .hero h2 {
    font-size: 1.5rem;
  }
  
  .hero p {
    font-size: 1rem;
  }
  
  .hero .subtitle {
    font-size: 0.95rem;
  }
  
  .stat-item h3 {
    font-size: 1.8rem;
  }
  
  .feature-card,
  .solution-card {
    padding: 1.5rem;
  }
  
  .tech-card,
  .case-card {
    padding: 1.5rem;
  }
}

/* 터치 디바이스 최적화 */
@media (hover: none) and (pointer: coarse) {
  .feature-card:hover,
  .tech-card:hover,
  .solution-card:hover,
  .case-card:hover {
    transform: none;
  }
  
  .feature-card:active,
  .tech-card:active,
  .solution-card:active,
  .case-card:active {
    transform: scale(0.98);
  }
}

/* 다크모드 지원 준비 */
@media (prefers-color-scheme: dark) {
  /* 추후 다크모드 스타일 추가 가능 */
}

/* 프린트 최적화 */
@media print {
  header {
    position: static;
  }
  
  .back-to-top,
  .scroll-progress,
  .lang-switcher {
    display: none;
  }
  
  .hero {
    background: #667eea;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}
content: center;
  }
  
  .lang-switcher {
    width: 100%;
    max-width: 200px;
  }
  
  .lang-dropdown-btn {
    font-size: 0.85rem;
    padding: 0.4rem 0.8rem;
    width: 100%;
  }
  
  .lang-dropdown-menu {
    width: 100%;
    right: 0;
  }
}