/* Global reset 및 기본 스타일 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-color: #ff0066;
  --primary-hover: #ff1a75;
  --secondary-color: #1a1a1a;
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --border-color: #333333;
  --shadow-light: 0 2px 10px rgba(0, 0, 0, 0.3);
  --shadow-medium: 0 4px 20px rgba(0, 0, 0, 0.4);
  --gradient-bg: linear-gradient(135deg, #0f0f0f 0%, #1a1a1a 50%, #2d2d2d 100%);
  --card-bg: #1e1e1e;
  --header-bg: rgba(30, 30, 30, 0.95);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell,
    'Open Sans', 'Helvetica Neue', sans-serif;
  background: var(--gradient-bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

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

/* 헤더 스타일 */
.header {
  background: var(--header-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  padding: 20px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header .container {
  text-align: center;
}

.logo {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 5px;
}

.subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin: 0;
}

/* 메인 콘텐츠 */
.main {
  padding: 40px 0;
}

/* 히어로 섹션 */
.hero {
  background: var(--card-bg);
  border-radius: 20px;
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-color);
  padding: 60px 40px;
  margin-bottom: 40px;
  text-align: center;
}

.hero-content h2 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.hero-description {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.8;
}

.cta-wrapper {
  margin-bottom: 30px;
}

/* 메인 버튼 스타일 (중앙에 위치) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-decoration: none;
  padding: 18px 36px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  color: white;
  font-weight: 600;
  font-size: 1.1rem;
  border-radius: 50px;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-light);
  border: none;
  cursor: pointer;
  min-width: 200px;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 0, 102, 0.3);
}

.btn-icon {
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}

.btn:hover .btn-icon {
  transform: translateX(5px);
}

.update-info {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* 정보 섹션 */
.info-section {
  margin-bottom: 40px;
}

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

.info-card {
  background: var(--card-bg);
  border-radius: 16px;
  border: 1px solid var(--border-color);
  padding: 30px;
  box-shadow: var(--shadow-light);
  transition: transform 0.3s ease;
}

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

.info-card h3 {
  font-size: 1.3rem;
  margin-bottom: 20px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.info-card ul {
  list-style: none;
}

.info-card li {
  padding: 8px 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: 20px;
}

.info-card li:before {
  content: "•";
  color: var(--primary-color);
  position: absolute;
  left: 0;
  font-weight: bold;
}

/* FAQ 섹션 */
.faq-section {
  background: var(--card-bg);
  border-radius: 20px;
  border: 1px solid var(--border-color);
  padding: 40px;
  box-shadow: var(--shadow-medium);
  margin-bottom: 40px;
}

.faq-section h2 {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 30px;
  color: var(--text-primary);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 20px;
  padding-bottom: 20px;
}

.faq-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.faq-item summary {
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-primary);
  cursor: pointer;
  padding: 15px 0;
  list-style: none;
  position: relative;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary:after {
  content: '+';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  color: var(--primary-color);
  transition: transform 0.3s ease;
}

.faq-item[open] summary:after {
  transform: translateY(-50%) rotate(45deg);
}

.faq-item p {
  padding: 15px 0;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 푸터 */
.footer {
  background: var(--header-bg);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  text-align: center;
}

.footer-content p {
  margin-bottom: 15px;
  color: var(--text-secondary);
}

.disclaimer {
  font-size: 0.9rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
  .hero {
    padding: 40px 20px;
  }
  
  .hero-content h2 {
    font-size: 2rem;
  }
  
  .hero-description {
    font-size: 1.1rem;
  }
  
  .btn {
    padding: 16px 32px;
    font-size: 1rem;
  }
  
  .info-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .info-card {
    padding: 25px;
  }
  
  .faq-section {
    padding: 30px 20px;
  }
  
  .logo {
    font-size: 1.6rem;
  }
  
  .subtitle {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }
  
  .hero-content h2 {
    font-size: 1.7rem;
  }
  
  .btn {
    padding: 14px 28px;
    min-width: 180px;
  }
  
  .info-card {
    padding: 20px;
  }
  
  .faq-section {
    padding: 25px 15px;
  }
}