@font-face {
  font-family: 'RIDIBatang';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_twelve@1.0/RIDIBatang.woff') format('woff');
  font-display: swap;
}

:root {
  --primary-color: #2a2a2a;
  --secondary-color: #666;
  --background-color: #fdf8f5;
  --card-bg: #ffffff;
  --border-color: #eee;
}

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

body {
  font-family: 'RIDIBatang', 'Georgia', serif;
  background: var(--background-color);
  color: var(--primary-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.app-page {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Hero */
.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 5rem 1rem 4rem;
}

.app-icon {
  width: 120px;
  height: 120px;
  border-radius: 22%;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
  margin-bottom: 2rem;
}

.app-title {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.app-tagline {
  font-size: 1.1rem;
  color: var(--secondary-color);
  margin-bottom: 2.5rem;
}

.app-store-link {
  display: inline-block;
  transition: transform 0.2s ease;
}

.app-store-link:hover {
  transform: scale(1.05);
}

.app-store-badge {
  height: 48px;
  width: auto;
}

/* Features */
.features {
  padding: 2rem 0 4rem;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.feature-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  color: var(--primary-color);
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--secondary-color);
  line-height: 1.7;
}

/* Footer */
.app-footer {
  text-align: center;
  padding: 3rem 1rem 4rem;
  border-top: 1px solid var(--border-color);
}

.app-footer .app-store-badge {
  margin-bottom: 1.5rem;
}

.footer-text {
  font-size: 0.9rem;
  color: var(--secondary-color);
  letter-spacing: 0.5px;
}

/* Mobile */
@media (max-width: 640px) {
  .hero {
    padding: 3.5rem 1rem 3rem;
  }

  .app-icon {
    width: 96px;
    height: 96px;
    margin-bottom: 1.5rem;
  }

  .app-title {
    font-size: 1.8rem;
  }

  .app-tagline {
    font-size: 1rem;
    margin-bottom: 2rem;
  }

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

  .feature-card {
    padding: 1.5rem;
  }

  .app-footer {
    padding: 2.5rem 1rem 3rem;
  }
}