/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f5f5f5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  color: white;
  text-align: center;
  padding: 2rem 1rem;
}

.header h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.header .tagline {
  font-size: 1rem;
  opacity: 0.9;
}

/* Main Content */
.main-content {
  flex: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
  width: 100%;
}

/* Banner Sections */
.banner-section {
  text-align: center;
  margin: 1.5rem 0;
  background: white;
  padding: 1rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.banner-section iframe {
  max-width: 100%;
  border: none;
}

.banner-section img {
  max-width: 100%;
  height: auto;
}

/* 데스크톱/모바일 배너 전환 */
.banner-section .banner-desktop {
  display: inline-block;
}

.banner-section .banner-mobile {
  display: none;
}

/* 모바일: 768px 미만 */
@media (max-width: 767px) {
  .banner-section .banner-desktop {
    display: none;
  }

  .banner-section .banner-mobile {
    display: inline-block;
  }

  .header h1 {
    font-size: 1.5rem;
  }

  .header .tagline {
    font-size: 0.9rem;
  }

  .main-content {
    padding: 1rem;
  }

  .banner-section {
    margin: 1rem 0;
    padding: 0.75rem;
  }
}

/* 쿠팡 파트너스 공시 문구 */
.disclosure {
  text-align: center;
  font-size: 0.85rem;
  color: #666;
  margin-top: 2rem;
  padding: 1rem;
  background: #fff;
  border-radius: 8px;
  border-left: 4px solid #1e3c72;
}

/* Footer */
.footer {
  background: #333;
  color: #fff;
  text-align: center;
  padding: 1rem;
  font-size: 0.85rem;
}

/* 태블릿 */
@media (min-width: 768px) and (max-width: 1024px) {
  .main-content {
    max-width: 90%;
  }
}