:root {
  --teal: #0A8080;
  --teal-dark: #075f5f;
  --teal-soft: #e6f3f3;
  --navy: #355b8c;
  --navy-dark: #27446b;
  --ink: #122233;
  --slate: #51667c;
  --bg: #ffffff;
  --bg-tint: #f4f8f8;
  --line: #e3ecec;
  --radius: 16px;
  --shadow-sm: 0 6px 20px rgba(18, 34, 51, 0.08);
  --shadow-md: 0 18px 50px rgba(18, 34, 51, 0.14);
  --font-head: 'B612', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang TC', 'Microsoft JhengHei', 'Meiryo', 'Malgun Gothic', 'Noto Sans KR', sans-serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang TC', 'Microsoft JhengHei', 'Meiryo', 'Malgun Gothic', 'Noto Sans KR', sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ---------- Ambient background (subtle branded orbs + scroll parallax) ---------- */
.bg-ambient {
  position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none;
}
.bg-ambient .orb { position: absolute; will-change: transform; }
.bg-ambient .orb span { display: block; width: 100%; height: 100%; border-radius: 50%; }
.orb-1 { top: 5%; left: -14%; width: 62vw; height: 62vw; }
.orb-1 span { background: radial-gradient(circle at 38% 35%, rgba(10,128,128,0.10), rgba(10,128,128,0) 66%); animation: drift-a 38s ease-in-out infinite alternate; }
.orb-2 { top: 52%; right: -16%; width: 56vw; height: 56vw; }
.orb-2 span { background: radial-gradient(circle at 60% 42%, rgba(53,91,140,0.10), rgba(53,91,140,0) 66%); animation: drift-b 46s ease-in-out infinite alternate; }
.orb-3 { bottom: -22%; left: 16%; width: 50vw; height: 50vw; }
.orb-3 span { background: radial-gradient(circle at 50% 55%, rgba(53,91,140,0.08), rgba(10,128,128,0) 66%); animation: drift-c 52s ease-in-out infinite alternate; }
@keyframes drift-a { from { transform: translate3d(0,0,0) scale(1); } to { transform: translate3d(48px,-34px,0) scale(1.05); } }
@keyframes drift-b { from { transform: translate3d(0,0,0) scale(1.04); } to { transform: translate3d(-44px,40px,0) scale(1); } }
@keyframes drift-c { from { transform: translate3d(0,0,0) scale(1); } to { transform: translate3d(36px,-28px,0) scale(1.06); } }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
h1, h2, h3 { font-family: var(--font-head); line-height: 1.2; font-weight: 700; }

.container { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .3s var(--ease);
}
.site-header.is-scrolled { box-shadow: var(--shadow-sm); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }

.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo {
  height: 60px; width: auto; flex: none; display: block;
}

.nav { display: flex; gap: 26px; align-items: center; }
.nav a { font-size: 15px; font-weight: 500; color: var(--slate); position: relative; padding: 6px 0; transition: color .2s; }
.nav a::after {
  content: ''; position: absolute; left: 0; bottom: 0; height: 2px; width: 0;
  background: var(--teal); transition: width .25s var(--ease);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 14px; }
.lang-select select {
  appearance: none; -webkit-appearance: none;
  font-family: var(--font-body); font-size: 14px; font-weight: 500;
  color: var(--ink); background: var(--bg-tint);
  border: 1px solid var(--line); border-radius: 999px;
  padding: 8px 30px 8px 14px; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2351667c' stroke-width='2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center;
}

.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .3s var(--ease), opacity .3s; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; }
.media { position: relative; overflow: hidden; background: linear-gradient(135deg, var(--teal) 0%, var(--navy) 100%); }
.media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.media__label {
  position: absolute; inset: 0; display: grid; place-items: center; z-index: 0;
  font-size: 12px; letter-spacing: .04em; color: rgba(255,255,255,.65); text-align: center; padding: 16px;
}
.media--hero { position: absolute; inset: 0; z-index: 0; }
.media--hero img { animation: kenburns 24s var(--ease) infinite alternate; }
@keyframes kenburns { from { transform: scale(1); } to { transform: scale(1.14); } }

.hero-video { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: 1; display: none; }
.hero-overlay {
  position: absolute; inset: 0; z-index: 2;
  background: linear-gradient(120deg, rgba(18,34,51,.62) 0%, rgba(10,128,128,.36) 55%, rgba(53,91,140,.32) 100%);
}
.hero-content { position: relative; z-index: 3; color: #fff; padding-top: 100px; padding-bottom: 80px; }
.hero-kicker {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: #c9f0ef; background: rgba(255,255,255,.12); border: 1px solid rgba(255,255,255,.2);
  padding: 7px 16px; border-radius: 999px; margin-bottom: 22px;
}
.hero-title { font-size: clamp(2.4rem, 6vw, 4.6rem); letter-spacing: .01em; margin-bottom: 18px; }
.hero-subtitle { font-size: clamp(1.05rem, 2.2vw, 1.3rem); max-width: 640px; color: rgba(255,255,255,.92); margin-bottom: 34px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-body);
  font-size: 15px; font-weight: 700; padding: 14px 28px; border-radius: 999px;
  border: 2px solid transparent; cursor: pointer; transition: transform .2s var(--ease), box-shadow .2s, background .2s, color .2s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--teal); color: #fff; box-shadow: 0 10px 30px rgba(10,128,128,.35); }
.btn-primary:hover { background: var(--teal-dark); transform: translateY(-2px); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.5); }
.btn-ghost:hover { background: rgba(255,255,255,.12); border-color: #fff; }

.hero-scroll { position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%); z-index: 3; }
.hero-scroll span {
  display: block; width: 26px; height: 42px; border: 2px solid rgba(255,255,255,.6); border-radius: 999px; position: relative;
}
.hero-scroll span::after {
  content: ''; position: absolute; top: 8px; left: 50%; width: 4px; height: 8px; margin-left: -2px;
  background: #fff; border-radius: 4px; animation: scrolldot 1.8s ease-in-out infinite;
}
@keyframes scrolldot { 0% { transform: translateY(0); opacity: 1; } 70% { transform: translateY(14px); opacity: 0; } 100% { opacity: 0; } }

/* ---------- Sections ---------- */
.section { padding: 96px 0; }
.section--tint { background: rgba(244, 248, 248, 0.7); }
.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-kicker {
  display: inline-block; font-size: 13px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase;
  color: var(--teal); margin-bottom: 14px;
}
.section-title { font-size: clamp(1.7rem, 3.6vw, 2.5rem); margin-bottom: 14px; }
.section-sub { color: var(--slate); font-size: 1.05rem; }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.media--frame { border-radius: var(--radius); box-shadow: var(--shadow-md); aspect-ratio: 4 / 3; }
.about-body p { color: var(--slate); margin-bottom: 18px; font-size: 1.05rem; }
.about-body p:last-child { margin-bottom: 0; }

/* Vision & Mission */
.vm-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 28px; }
.vm-card { background: #fff; border-radius: var(--radius); padding: 36px; box-shadow: var(--shadow-sm); border: 1px solid var(--line); }
.vm-card--vision { background: linear-gradient(150deg, var(--teal), var(--teal-dark)); color: #fff; border: 0; }
.vm-icon { display: grid; place-items: center; width: 52px; height: 52px; border-radius: 14px; font-size: 24px; margin-bottom: 20px; background: rgba(255,255,255,.15); }
.vm-card--mission .vm-icon { background: var(--teal-soft); color: var(--teal); }
.vm-card h3 { font-size: 1.5rem; margin-bottom: 16px; }
.vm-card--vision p { font-size: 1.2rem; line-height: 1.6; }
.mission-list { display: flex; flex-direction: column; gap: 18px; }
.mission-list li { position: relative; padding-left: 34px; color: var(--slate); }
.mission-list li::before {
  content: counter(m); counter-increment: m; position: absolute; left: 0; top: 2px;
  width: 22px; height: 22px; border-radius: 50%; background: var(--teal); color: #fff;
  font-size: 12px; font-weight: 700; display: grid; place-items: center;
}
.mission-list { counter-reset: m; }

/* Services */
.cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.card { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--line); transition: transform .3s var(--ease), box-shadow .3s var(--ease); }
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.media--card { aspect-ratio: 16 / 10; }
.media--card img { transition: transform .6s var(--ease); }
.card:hover .media--card img { transform: scale(1.07); }
.card-body { padding: 24px 26px 28px; }
.card-body h3 { font-size: 1.25rem; margin-bottom: 8px; }
.card-body p { color: var(--slate); }

/* Destinations */
.dest-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.dest-card { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); }
.media--dest { aspect-ratio: 3 / 4; }
.dest-card h3 {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 44px 20px 20px;
  color: #fff; font-size: 1.35rem; z-index: 2;
  background: linear-gradient(transparent, rgba(18,34,51,.85));
}
.dest-card .media--dest img { transition: transform .6s var(--ease); }
.dest-card:hover .media--dest img { transform: scale(1.08); }

/* Stats */
.stats-band { background: linear-gradient(120deg, var(--navy), var(--teal)); padding: 64px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; text-align: center; color: #fff; }
.stat-value { font-family: var(--font-head); font-weight: 700; font-size: clamp(2.6rem, 5vw, 3.6rem); display: block; line-height: 1; }
.stat-label { color: rgba(255,255,255,.85); font-size: 15px; }

/* License */
.license-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; max-width: 820px; margin: 0 auto; }
.license-item { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; text-align: center; box-shadow: var(--shadow-sm); }
.license-icon { display: grid; place-items: center; width: 56px; height: 56px; margin: 0 auto 16px; border-radius: 16px; font-size: 26px; background: var(--teal-soft); color: var(--teal); }
.license-label { display: block; color: var(--slate); margin-bottom: 8px; }
.license-value { font-family: var(--font-head); font-size: 1.35rem; color: var(--ink); }

/* Gallery */
.gallery-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.gallery-grid a { position: relative; border-radius: 12px; overflow: hidden; aspect-ratio: 1; cursor: zoom-in; display: block; }
.gallery-grid .media { width: 100%; height: 100%; }
.gallery-grid .media img { transition: transform .5s var(--ease); }
.gallery-grid a:hover .media img { transform: scale(1.08); }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-list { display: flex; flex-direction: column; gap: 24px; }
.contact-list li { display: flex; gap: 16px; }
.contact-icon { flex: none; width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; font-size: 20px; background: var(--teal-soft); }
.contact-list strong { display: block; margin-bottom: 2px; }
.contact-list p { color: var(--slate); }
.socials { display: flex; gap: 10px; margin-top: 28px; flex-wrap: wrap; }
.social {
  display: inline-grid; place-items: center; width: 44px; height: 44px;
  border-radius: 999px; background: var(--bg-tint); border: 1px solid var(--line);
  color: var(--navy); transition: background .2s, color .2s, transform .2s;
}
.social svg { width: 22px; height: 22px; fill: currentColor; }
.social:hover { background: var(--teal); color: #fff; border-color: var(--teal); transform: translateY(-2px); }

.contact-form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow-sm); display: flex; flex-direction: column; gap: 18px; }
.contact-form label { display: flex; flex-direction: column; gap: 8px; font-size: 14px; font-weight: 700; color: var(--ink); }
.contact-form input, .contact-form textarea {
  font-family: var(--font-body); font-size: 15px; color: var(--ink);
  border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; width: 100%;
  background: var(--bg-tint); transition: border-color .2s, box-shadow .2s;
}
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(10,128,128,.15); background: #fff; }
.contact-form textarea { resize: vertical; min-height: 120px; }

/* Footer */
.site-footer { background: var(--ink); color: rgba(255,255,255,.7); padding: 40px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.footer-brand { font-family: var(--font-head); font-weight: 700; color: #fff; font-size: 16px; }
.footer-copy { font-size: 14px; }

/* Lightbox */
.lightbox { position: fixed; inset: 0; z-index: 200; background: rgba(12,20,32,.92); display: none; align-items: center; justify-content: center; padding: 24px; }
.lightbox.is-open { display: flex; }
.lightbox-img { max-width: 92vw; max-height: 88vh; border-radius: 8px; box-shadow: var(--shadow-md); }
.lightbox-close { position: absolute; top: 20px; right: 26px; font-size: 40px; line-height: 1; color: #fff; background: none; border: 0; cursor: pointer; }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal:nth-child(2) { transition-delay: .08s; }
.reveal:nth-child(3) { transition-delay: .16s; }
.reveal:nth-child(4) { transition-delay: .24s; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav {
    position: fixed; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 4px;
    background: #fff; padding: 16px 24px 24px; border-bottom: 1px solid var(--line);
    transform: translateY(-120%); transition: transform .35s var(--ease); box-shadow: var(--shadow-md);
  }
  .nav.is-open { transform: translateY(0); }
  .nav a { font-size: 17px; padding: 10px 0; width: 100%; }
  .nav-toggle { display: flex; }

  .about-grid, .vm-grid, .contact-grid { grid-template-columns: 1fr; }
  .cards-grid, .dest-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; gap: 32px; }
  .license-grid { grid-template-columns: 1fr; }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .section { padding: 72px 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .media--hero img { animation: none; }
  .hero-scroll span::after { animation: none; }
  .bg-ambient .orb span { animation: none; }
  .card, .dest-card, .social { transition: none; }
  .card:hover, .dest-card:hover, .social:hover { transform: none; }
  .card:hover .media--card img, .dest-card:hover .media--dest img, .gallery-grid a:hover .media img { transform: none; }
}