/* Reset & Base */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Noto Sans KR', Arial, sans-serif;
  line-height: 1.6;
  color: #e9eef7;
  background: #0a1220; /* 진한 남청색 톤 */
}

a { color: #93c5fd; text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
.section { padding: 56px 0; }

h1, h2, h3 { margin: 0 0 12px; line-height: 1.2; }
h3 { font-size: 1.375rem; }

.dim { color: #9fb3d6; font-size: 0.95rem; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(6, 16, 34, 0.85);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  backdrop-filter: blur(6px);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.brand { font-size: 1.25rem; font-weight: 800; letter-spacing: 0.5px; }
.cta {
  background: #1d4ed8;
  padding: 10px 14px; border-radius: 12px; color: #eaf2ff; font-weight: 700;
}
.cta:hover { background: #2563eb; text-decoration: none; }

/* Hero */
.hero {
  min-height: 58vh;
  background: url('../img/hero.jpg') center/cover no-repeat, radial-gradient(1200px 600px at 10% 10%, #13233f, #0a1220);
  position: relative;
}
.hero .overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(4,10,20,0.45) 0%, rgba(4,10,20,0.85) 65%, #0a1220 100%);
  display: flex; align-items: end; justify-content: center;
}
.hero-text {
  text-align: center; padding: 56px 16px 64px;
}
.hero-text h2 { font-size: 2rem; margin-bottom: 10px; }
.hero-text p { color: #c6d5f4; margin-bottom: 18px; }
.btn { display: inline-block; background: #0ea5e9; color: #081223; padding: 12px 18px; border-radius: 12px; font-weight: 700; }
.btn:hover { background: #38bdf8; text-decoration: none; }

/* Features */
.features {
  display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px;
  padding-left: 18px;
}
.features li { list-style: "✔  "; color: #d7e5ff; }

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.gallery img {
  width: 100%; height: 180px; object-fit: cover;
  border-radius: 14px; border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 6px 18px rgba(2, 12, 24, 0.45);
}

/* Contact */
.contact ul { padding-left: 18px; }
.contact li { margin-bottom: 6px; }

/* Iframe wrap */
.iframe-wrap {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 10px 26px rgba(2, 12, 24, 0.5);
}
#iframe { display: block; width: 100%; }

/* Footer */
.site-footer {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 28px 0; color: #9fb3d6;
  text-align: center;
}

/* Responsive */
@media (max-width: 640px) {
  .features { grid-template-columns: 1fr; }
  .hero-text h2 { font-size: 1.6rem; }
}


/* Section photos */
.section-photo {
  display: block;
  max-width: 640px;
  margin: 16px auto;
  border-radius: 14px;
  box-shadow: 0 6px 18px rgba(2, 12, 24, 0.45);
}

/* Section side figures */
.section-figure { margin: 10px 0 18px; }
.section-figure img { width: 100%; max-width: 520px; height: auto; border-radius: 14px; border: 1px solid rgba(255,255,255,0.08); box-shadow: 0 8px 22px rgba(2,12,24,0.5); }
.section-figure figcaption { font-size: 0.95rem; color: #b7c8e8; margin-top: 6px; }
.section-figure.left { float: left; margin-right: 20px; }
.section-figure.right { float: right; margin-left: 20px; }
@media (max-width: 860px) {
  .section-figure.left, .section-figure.right { float: none; margin: 8px 0 14px; }
  .section-figure img { max-width: 100%; }
}