/* --------------------
   기본 스타일
-------------------- */
body {
  margin: 0;
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333;
  background: #f9fbff;
}

header {
  color: #fff;
  text-align: center;
  padding-bottom: 40px;
}

/* --------------------
   Navbar
-------------------- */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: #ffffff;
  position: relative;
  z-index: 100;
  border-bottom: 1px solid #eaeaea;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.logo {
  width: 180px;
  height: auto;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: #333;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: #145bb5;
}

.menu-toggle {
  display: none;
  font-size: 1.8rem;
  background: none;
  border: none;
  cursor: pointer;
  color: #333;
}

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

/* --------------------
   섹션 & 카드
-------------------- */
h1,h2,h3 {margin:20px 0 10px;}

.section {
  padding:40px 20px;
  max-width:1100px;
  margin:0 auto;
}

.intro {
  text-align:center;
  margin-bottom:40px;
}

.intro h1 {font-size:32px;color:#333;}
.intro p {color:#555;font-size:16px;}

.cards {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:20px;
  margin-top:40px;
}

.card {
  background:#fafafa;
  border:1px solid #eee;
  border-radius:12px;
  padding:24px;
  box-sizing:border-box;
  text-align:center;
}

.card h3 {margin-top:0;color:#0a5ff0;}

.values {
  margin-top:60px;
}

.values h2 {
  text-align:center;
  color:#0a5ff0;
}

.values-list {
  display:flex;
  flex-wrap:wrap;
  justify-content:space-around;
  margin-top:20px;
  gap:20px;
}

.value {
  flex:1;
  min-width:220px;
  max-width:280px;
  background:#f8f8ff;
  border:1px solid #dde3f7;
  border-radius:10px;
  padding:20px;
  text-align:center;
}

.value h4 {margin:0 0 10px;color:#333;}
.value p {font-size:14px;color:#555;}

.history {
  margin-top:60px;
}

.history h2 {
  text-align:center;
  color:#0a5ff0;
}

.timeline {
  margin:30px auto;
  max-width:800px;
  border-left:3px solid #0a5ff0;
  padding-left:20px;
}

.timeline-item {
  margin-bottom:20px;
}

.timeline-item h4 {margin:0;font-size:16px;color:#0a5ff0;}
.timeline-item p {margin:4px 0 0;color:#444;font-size:14px;}

/* --------------------
   Footer
-------------------- */
footer {
  background:#f6f6f6;
  padding:32px 20px;
  color:#444;
  font-size:13px;
  margin-top:40px;
}

footer .footer-top {
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:20px;
}

footer .footer-bottom {
  margin-top:20px;
  text-align:center;
  font-size:12px;
  color:#777;
}

footer img {
  height:28px;
  margin-right:8px;
  vertical-align:middle;
}

/* --------------------
   반응형
-------------------- */
@media (max-width:1024px) {
  .cards {
    grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  }

  .values-list {
    justify-content: space-between;
  }

  .section {padding:30px 15px;}
}

@media (max-width:768px) {
  .menu-toggle { display:block; }

  .nav-links {
    display:none;
    flex-direction:column;
    gap:10px;
    position:absolute;
    top:70px;
    right:20px;
    background:#fff;
    padding:1rem 1.5rem;
    border:1px solid #ddd;
    border-radius:8px;
    box-shadow:0 2px 6px rgba(0,0,0,0.15);
  }

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

  .cards {grid-template-columns:1fr; gap:15px;}
  .values-list {flex-direction:column; gap:15px;}
  .section {padding:25px 10px;}
  .intro h1 {font-size:24px;}
  .intro p {font-size:14px;}
  .card {padding:16px;}
  .value {padding:16px;}
  .timeline {padding-left:15px;}
  .timeline-item h4 {font-size:14px;}
  .timeline-item p {font-size:13px;}
}

@media (max-width:480px) {
  .section {padding:20px 5px;}
  .intro h1 {font-size:20px;}
  .intro p {font-size:13px;}
  .card {padding:12px;}
  .value {padding:12px;}
  .timeline {padding-left:10px;}
  .timeline-item h4 {font-size:13px;}
  .timeline-item p {font-size:12px;}
}