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

body {
  font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: #333;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 헤더 스타일 */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e0e0e0;
  z-index: 1000;
  transition: all 0.3s ease;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  font-size: 24px;
  font-weight: bold;
  color: #2c5aa0;
}

.logo i {
  margin-right: 10px;
  font-size: 28px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-menu a {
  text-decoration: none;
  color: #333;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-menu a:hover {
  color: #2c5aa0;
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: #333;
  margin: 3px 0;
  transition: 0.3s;
}

/* 히어로 섹션 */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 120px 0 80px;
  text-align: center;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.hero-title {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.3rem;
  margin-bottom: 40px;
  opacity: 0.9;
}

.cta-button {
  background: #ff6b6b;
  color: white;
  border: none;
  padding: 18px 40px;
  font-size: 1.1rem;
  font-weight: bold;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.cta-button:hover {
  background: #ff5252;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 107, 107, 0.3);
}

/* 기능 섹션 */
.features {
  padding: 80px 0;
  background: #f8f9fa;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  font-weight: bold;
  margin-bottom: 60px;
  color: #333;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.feature-card {
  background: white;
  padding: 40px 30px;
  border-radius: 15px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.feature-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #667eea, #764ba2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.feature-icon i {
  font-size: 35px;
  color: white;
}

.feature-card h3 {
  font-size: 1.4rem;
  font-weight: bold;
  margin-bottom: 15px;
  color: #333;
}

.feature-card p {
  color: #666;
  margin-bottom: 25px;
  line-height: 1.6;
}

.feature-btn {
  background: #2c5aa0;
  color: white;
  border: none;
  padding: 12px 30px;
  border-radius: 25px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
}

.feature-btn:hover {
  background: #1e3f73;
  transform: translateY(-1px);
}

/* 파트너사 섹션 */
.partners {
  padding: 80px 0;
  background: #f8f9fa;
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.partner-card {
  background: white;
  padding: 40px 30px;
  border-radius: 15px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.partner-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
  border-color: #2c5aa0;
}

.partner-logo {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #2c5aa0, #4a90e2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.partner-logo i {
  font-size: 35px;
  color: white;
}

.partner-card h3 {
  font-size: 1.4rem;
  font-weight: bold;
  margin-bottom: 15px;
  color: #333;
}

.partner-card p {
  color: #666;
  margin-bottom: 25px;
  line-height: 1.6;
}

.partner-btn {
  background: #2c5aa0;
  color: white;
  border: none;
  padding: 12px 30px;
  border-radius: 25px;
  cursor: pointer;
  font-weight: 500;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.partner-btn:hover {
  background: #1e3f73;
  transform: translateY(-1px);
  color: white;
}

.partner-btn i {
  font-size: 14px;
}

/* 장점 섹션 */
.benefits {
  padding: 80px 0;
  background: white;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-top: 50px;
}

.benefit-item {
  text-align: center;
  padding: 30px 20px;
}

.benefit-icon {
  width: 70px;
  height: 70px;
  background: #ff6b6b;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.benefit-icon i {
  font-size: 30px;
  color: white;
}

.benefit-item h3 {
  font-size: 1.3rem;
  font-weight: bold;
  margin-bottom: 15px;
  color: #333;
}

.benefit-item p {
  color: #666;
  line-height: 1.6;
}

/* 사용방법 섹션 */
.howto {
  padding: 80px 0;
  background: #f8f9fa;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
  margin-top: 50px;
}

.step {
  text-align: center;
  padding: 30px 20px;
}

.step-number {
  width: 60px;
  height: 60px;
  background: #2c5aa0;
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: bold;
  margin: 0 auto 20px;
}

.step h3 {
  font-size: 1.3rem;
  font-weight: bold;
  margin-bottom: 15px;
  color: #333;
}

.step p {
  color: #666;
}

/* 문의 섹션 */
.contact {
  padding: 80px 0;
  background: white;
  text-align: center;
}

.contact p {
  font-size: 1.1rem;
  color: #666;
  margin-bottom: 40px;
}

.contact-info {
  display: flex;
  justify-content: center;
  gap: 50px;
  flex-wrap: wrap;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  color: #333;
}

.contact-item i {
  color: #2c5aa0;
  font-size: 20px;
}

/* 푸터 */
.footer {
  background: #333;
  color: white;
  text-align: center;
  padding: 30px 0;
}

/* 모바일 반응형 */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: white;
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    padding: 20px 0;
  }

  .nav-menu.active {
    left: 0;
  }

  .hamburger {
    display: flex;
  }

  .hamburger.active span:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }

  .hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .benefits-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .contact-info {
    flex-direction: column;
    gap: 20px;
  }

  .cta-button {
    padding: 15px 30px;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.8rem;
  }

  .feature-card {
    padding: 30px 20px;
  }

  .container {
    padding: 0 15px;
  }

  .nav-container {
    padding: 0 15px;
  }
}

/* 스크롤 애니메이션 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

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