:root {
  --bg: #f5f9fc;
  --surface: #ffffff;
  --text: #1f2a36;
  --muted: #637083;
  --line: #dbe5ef;
  --brand-900: #1f6fa3;
  --brand-700: #2388c2;
  --brand-600: #379cd6;
  --brand-500: #5fb4e4;
  --brand-400: #80c7ef;
  --brand-050: #eaf4fb;
  --radius: 14px;
  --shadow: 0 12px 28px rgba(24, 66, 97, 0.12);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Sans KR", "Apple SD Gothic Neo", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 300;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--line);
}

.topbar {
  border-bottom: 1px solid #edf2f7;
  font-size: 0.86rem;
  color: var(--muted);
}

.topbar-inner {
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.top-links {
  display: flex;
  gap: 0.9rem;
}

.header-main {
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.logo img {
  height: 90px;
  width: auto;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 10px;
  width: 46px;
  height: 42px;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px auto;
  background: #2c3e50;
}

.main-nav ul {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
  width: 100%;
}

.main-nav a {
  display: inline-block;
  padding: 0.5rem 0.8rem;
  
  font-weight: 600;
  font-size: 0.96rem;
  color: #2f4052;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--brand-900);
  background: var(--brand-050);
}

.section {
  padding: 4.25rem 0;
}

.hero.section {
  padding-top: 0.5rem;
  padding-bottom: 0;
}

.hero .container {
  max-width: 100%;
  padding-left: 0;
  padding-right: 0;
}
.section-title {
  text-align: center;
  margin-bottom: 2rem;
}

.section-title .eyebrow {
  font-size: 0.82rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--brand-700);
  margin-bottom: 0.35rem;
}

.section-title h2,
.section-title h1 {
  margin: 0;
  font-family: "Nanum Myeongjo", serif;
  font-size: clamp(1.6rem, 2.5vw, 2.4rem);
}

.slider {
  position: relative;
  overflow: hidden;
}

.slider-track {
  position: relative;
  min-height: 220px;
}

.slide {
  display: none;
}

.slide.is-active {
  display: block;
}

.hero .slide {
  position: relative;
}

.hero .slide img {
  width: 100%;
  height: clamp(240px, 38vw, 580px);
  object-fit: cover;
}

.hero-caption {
  position: absolute;
  inset: auto auto 1.3rem 1.3rem;
  background: rgba(20, 60, 90, 0.68);
  color: #fff;
  padding: 1rem 1.1rem;
  border-radius: 10px;
  max-width: min(86vw, 480px);
}

.slider-controls {
  position: absolute;
  left: 50%;
  bottom: 1.2rem;
  transform: translateX(-50%);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.6rem;
  z-index: 20;
}

.slider-button,
.dot {
  border: 2px solid rgba(255,255,255,0.75);
  background: rgba(255,255,255,0.12);
  color: #fff;
  border-radius: 999px;
}

.slider-button {
  width: 28px;
  height: 28px;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dot {
  width: 7px;
  height: 7px;
  padding: 0;
  background: transparent;
}

.dot.is-active {
  background: #fff;
  border-color: #fff;
}

.band-grid,
.service-grid,
.metrics-grid,
.feature-grid,
.news-grid,
.page-grid,
.footer-grid {
  display: grid;
  gap: 1rem;
}

.band-grid {
  grid-template-columns: repeat(3, 1fr);
  margin-top: 3%;
  position: relative;

  z-index: 5;
}

.service-card {
  color: #fff;
  padding: 2rem 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
}

.service-card h3 {
  margin: 0.4rem 0;
}

.service-card p {
  margin: 0;
  opacity: 0.95;
}

.badge {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  margin: 0 auto 0.8rem;
  background: rgba(255, 255, 255, 0.18);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-family: "Nanum Myeongjo", serif;
}

.btn {
  margin-top: 1rem;
  display: inline-block;
  padding: 0.55rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.9rem;
}

.bg-1 { background: var(--brand-700); }
.bg-2 { background: var(--brand-600); }
.bg-3 { background: var(--brand-500); }
.bg-4 { background: var(--brand-400); }

.feature-grid {
  grid-template-columns: repeat(2, 1fr);
}

.feature-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
}

.feature-item h3 {
  margin: 0 0 0.4rem;
}

.profile-wrap,
.visit-wrap,
.contact-wrap {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem;
}

.metrics-grid {
  grid-template-columns: repeat(4, 1fr);
}

.metric {
  border-radius: var(--radius);
  color: #fff;
  text-align: center;
  padding: 2rem 1rem;
}

.metric strong {
  display: block;
  font-size: clamp(1.2rem, 2.8vw, 1.9rem);
  font-family: "Nanum Myeongjo", serif;
}

.visit {
  background: #22689e;
  color: #fff;
}

.visit-image {
  min-height: 360px;
  border-radius: var(--radius);
  background-size: cover;
  background-position: center;
}

.news-area {
  background: var(--surface);
}

.news-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
}

.news-card time {
  color: var(--muted);
  font-size: 0.9rem;
}

.news-grid {
  grid-template-columns: repeat(3, 1fr);
}

.page-hero {
  padding: 5rem 0 3rem;
  color: #fff;
  background: radial-gradient(circle at top right, #54acd9, #1f6fa3 65%);
}

.page-hero p {
  margin: 0.6rem 0 0;
  max-width: 760px;
}

.page-grid {
  grid-template-columns: repeat(3, 1fr);
}

.page-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
}

.cta-box {
  background: var(--brand-050);
  border: 1px solid #c8dded;
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
}

.site-footer {
  margin-top: 3rem;
  background: #12354f;
  color: #d8e7f3;
}

.footer-grid {
  padding: 2.3rem 0;
  grid-template-columns: repeat(3, 1fr);
}

.site-footer h3 {
  margin-top: 0;
  color: #fff;
}

.socket {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.95rem 0;
  font-size: 0.9rem;
  color: #bdd5e6;
}

@media (max-width: 1024px) {
  .main-nav ul {
    gap: 0;
  }

  .band-grid,
  .metrics-grid,
  .news-grid,
  .page-grid,
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 780px) {
  .topbar {
    display: none;
  }

  .menu-toggle {
    display: inline-block;
  }

  .main-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    background: #fff;
    border-bottom: 1px solid var(--line);
    display: none;
  }

  .main-nav.is-open {
    display: block;
  }

  .main-nav ul {
    display: block;
    padding: 0.75rem 1rem 1rem;
  }

  .main-nav li + li {
    margin-top: 0.25rem;
  }

  .main-nav a {
    display: block;
    border-radius: 10px;
  }

  .section {
    padding: 3rem 0;
  }

  .band-grid,
  .feature-grid,
  .profile-wrap,
  .visit-wrap,
  .contact-wrap,
  .metrics-grid,
  .news-grid,
  .page-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .band-grid {
    margin-top: 1remx;
  }

  .visit-image {
    min-height: 260px;
  }
}