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

body {
  font-family: "Noto Sans KR", sans-serif;
  background: #f5f7fb;
  color: #333;
}

/* 네비게이션 */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 40px;
  background: #2c4cff;
  color: white;
}

.logo {
  font-size: 20px;
  font-weight: bold;
}

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

.nav-menu a {
  color: white;
  text-decoration: none;
  font-weight: 500;
}

.nav-menu a:hover {
  text-decoration: underline;
}

/* 소개 섹션 */
.intro {
  text-align: center;
  padding: 80px 20px 60px;
  background: white;
}

.intro h1 {
  font-size: 36px;
  margin-bottom: 15px;
}

.intro p {
  font-size: 18px;
  color: #555;
}

/* 카드 섹션 */
.cards {
  max-width: 1100px;
  margin: 50px auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  padding: 0 20px;
}

.card {
  background: white;
  padding: 30px;
  border-radius: 14px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
  transition: transform 0.3s;
}

.card:hover {
  transform: translateY(-8px);
}

.card h3 {
  margin-bottom: 12px;
  color: #2c4cff;
}