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

:root {
  --pastel-blue: #a8d8ff;
  --pastel-pink: #ffc2d4;
  --light-blue: #e3f2fd;
  --light-pink: #fce4ec;
  --dark-blue: #5b9bd5;
  --dark-pink: #f48fb1;
  --text-dark: #333333;
  --text-light: #666666;
  --white: #ffffff;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--white);
  margin: 0;
  padding: 0;
  padding-top: 170px;
}

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

section {
  padding: 60px 0;
}

h1, h2, h3 {
  line-height: 1.2;
}

h2 {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 40px;
  color: var(--dark-blue);
}

/* Header */
.header {
  background: var(--white);
  padding: 20px 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  width: 100%;
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-link {
  text-decoration: none;
  display: flex;
  align-items: center;
}

.logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark-blue);
  letter-spacing: 0.5px;
}

.logo-img {
  height: 54px;
  width: auto;
  object-fit: contain;
  display: block;
}

.nav {
  display: flex;
  align-items: center;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--dark-blue);
  padding: 4px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 30px;
  margin: 0;
  padding: 0;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: color 0.3s ease;
  font-size: 0.95rem;
}

.nav-menu a:hover {
  color: var(--dark-blue);
}

.cta-nav {
  background: linear-gradient(135deg, var(--dark-blue) 0%, var(--dark-pink) 100%);
  color: var(--white) !important;
  padding: 10px 20px;
  border-radius: 25px;
  transition: transform 0.3s ease;
}

.cta-nav:hover {
  transform: scale(1.05);
}

/* Shipping Banner */
.shipping-banner {
  background: linear-gradient(135deg, var(--light-blue) 0%, rgba(163, 216, 255, 0.5) 100%);
  padding: 17px 0;
  text-align: center;
  font-size: 1.1rem;
  color: var(--dark-blue);
  font-weight: 500;
  position: fixed;
  top: 76px;
  left: 0;
  right: 0;
  z-index: 999;
  width: 100%;
}

/* Activity Banner */
.activity-banner {
  background: var(--white);
  padding: 17px 0;
  border-bottom: 1px solid #f0f0f0;
  text-align: center;
  font-size: 1.05rem;
  color: var(--text-light);
  min-height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: fixed;
  top: 126px;
  left: 0;
  right: 0;
  z-index: 998;
  width: 100%;
}

#activityMessage {
  animation: fadeInOut 0.5s ease-in-out;
}

@keyframes fadeInOut {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

.hero {
  background: linear-gradient(135deg, var(--light-blue) 0%, var(--light-pink) 100%);
  padding: 80px 0;
  text-align: center;
}

.hero-title {
  font-size: 2.8rem;
  color: var(--dark-blue);
  margin-bottom: 20px;
  line-height: 1.3;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-dark);
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.countdown-box {
  background: var(--white);
  border-radius: 20px;
  padding: 30px;
  max-width: 600px;
  margin: 40px auto;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.countdown-box.mini {
  padding: 25px;
}

.countdown-label {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: 10px;
}

.countdown-text {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--dark-blue);
  margin-bottom: 20px;
}

.countdown {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.countdown-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.countdown-value {
  font-size: 3rem;
  font-weight: 700;
  color: var(--dark-pink);
}

.countdown-unit {
  font-size: 0.9rem;
  color: var(--text-light);
  text-transform: lowercase;
}

.countdown-separator {
  font-size: 2rem;
  color: var(--text-light);
  margin: 0 5px;
}

.cta-button {
  background: linear-gradient(135deg, var(--dark-blue) 0%, var(--dark-pink) 100%);
  color: var(--white);
  font-size: 1.3rem;
  font-weight: 600;
  padding: 18px 40px;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3);
}

.cta-button.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

.about {
  background-color: var(--white);
  text-align: center;
}

.about-content {
  max-width: 700px;
  margin: 0 auto;
}

.about-content p {
  font-size: 1.3rem;
  color: var(--text-dark);
  margin-bottom: 25px;
  line-height: 1.8;
}

.features {
  background: linear-gradient(135deg, var(--light-pink) 0%, var(--light-blue) 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.feature-card {
  background: var(--white);
  padding: 30px;
  border-radius: 15px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

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

.feature-icon {
  font-size: 3rem;
  margin-bottom: 15px;
}

.feature-card h3 {
  font-size: 1.1rem;
  color: var(--dark-blue);
}

.features-footer {
  text-align: center;
  font-size: 1.2rem;
  font-style: italic;
  color: var(--text-dark);
  margin-top: 20px;
}

.how-it-works {
  background-color: var(--white);
}

.steps {
  display: flex;
  justify-content: space-around;
  align-items: flex-start;
  gap: 40px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 250px;
  text-align: center;
}

.step-number {
  font-size: 4rem;
  margin-bottom: 15px;
}

.step p {
  font-size: 1.2rem;
  color: var(--text-dark);
}

.steps-footer {
  text-align: center;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--dark-pink);
}

.partner {
  background: linear-gradient(135deg, var(--light-blue) 0%, var(--light-pink) 100%);
}

.partner-card {
  background: var(--white);
  max-width: 600px;
  margin: 0 auto;
  padding: 40px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.partner-logo {
  margin-bottom: 20px;
  width: 200px;
  height: 200px;
  margin-left: auto;
  margin-right: auto;
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--light-blue);
}

.partner-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.partner-card h3 {
  font-size: 1.8rem;
  color: var(--dark-blue);
  margin-bottom: 15px;
}

.partner-card p {
  font-size: 1.1rem;
  color: var(--text-light);
  line-height: 1.6;
}

.themes {
  background-color: var(--white);
}

.themes-subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: var(--text-light);
  margin-bottom: 40px;
  font-style: italic;
}

.themes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.theme-card {
  background: linear-gradient(135deg, var(--pastel-blue) 0%, var(--pastel-pink) 100%);
  border-radius: 15px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  aspect-ratio: 1;
}

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

.theme-month {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--dark-blue);
  padding: 15px;
  background: rgba(255, 255, 255, 0.95);
  z-index: 2;
  position: relative;
}

.theme-image-container {
  flex: 1;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--pastel-blue) 0%, var(--pastel-pink) 100%);
}

.theme-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.contents {
  background: linear-gradient(135deg, var(--light-pink) 0%, var(--light-blue) 100%);
}

.contents-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
  margin-bottom: 30px;
}

.contents-column {
  background: var(--white);
  padding: 30px;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.contents-column h3 {
  font-size: 1.5rem;
  color: var(--dark-blue);
  margin-bottom: 20px;
}

.contents-column ul {
  list-style: none;
  padding: 0;
}

.contents-column li {
  font-size: 1.1rem;
  color: var(--text-dark);
  margin-bottom: 12px;
  padding-left: 10px;
}

.contents-footer {
  text-align: center;
  font-size: 1.3rem;
  color: var(--text-dark);
  font-style: italic;
  margin-top: 20px;
}

.scarcity {
  background-color: var(--white);
  text-align: center;
}

.scarcity-warning {
  font-size: 1.3rem;
  color: var(--dark-pink);
  font-weight: 600;
  margin-bottom: 30px;
}

.cta-final {
  background: linear-gradient(135deg, var(--dark-blue) 0%, var(--dark-pink) 100%);
  padding: 80px 0;
  text-align: center;
}

.cta-final-text {
  font-size: 2rem;
  color: var(--white);
  margin-bottom: 30px;
  font-weight: 600;
}

.footer {
  background-color: var(--text-dark);
  color: var(--white);
  text-align: center;
  padding: 30px 0;
}

.footer p {
  font-size: 1rem;
}

@media (max-width: 768px) {
  body {
    padding-top: 210px;
  }

  .menu-toggle {
    display: block;
  }

  .nav-menu {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--white);
    padding: 20px 0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    z-index: 997;
  }

  .nav-menu.active {
    display: flex;
  }

  .nav-menu li {
    border-bottom: 1px solid #f0f0f0;
    padding: 12px 20px;
    margin: 0;
  }

  .nav-menu a {
    display: block;
  }

  .logo {
    font-size: 16px;
  }

  .logo-img {
    height: 48px;
  }

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

  .hero-subtitle {
    font-size: 1rem;
  }

  h2 {
    font-size: 2rem;
  }

  .countdown-value {
    font-size: 2rem;
  }

  .cta-button {
    font-size: 1.1rem;
    padding: 15px 30px;
  }

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

  .steps {
    flex-direction: column;
  }

  .themes-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  }

  .contents-grid {
    grid-template-columns: 1fr;
  }

  .shipping-banner {
    font-size: 0.85rem;
    padding: 10px 0;
  }

  .activity-banner {
    font-size: 0.8rem;
  }
}