:root {
  --primary: #0e7c86;
  --primary-dark: #0a5f67;
  --accent: #ff6b35;
  --ink: #1c2b2e;
  --muted: #5c6b6e;
  --bg: #f7f9f9;
  --card: #ffffff;
  --border: #e3e9ea;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Pretendard", -apple-system, BlinkMacSystemFont, "Malgun Gothic", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.container { max-width: 1160px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  max-width: 1160px; margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.logo { font-size: 1.25rem; font-weight: 800; color: var(--primary-dark); white-space: nowrap; }
.main-nav { display: flex; gap: 22px; }
.main-nav a { font-weight: 600; font-size: 0.95rem; color: var(--ink); }
.main-nav a:hover { color: var(--primary); }
.btn {
  display: inline-block; padding: 10px 20px; border-radius: 8px;
  font-weight: 700; font-size: 0.95rem; cursor: pointer; border: none;
}
.btn-cta { background: var(--accent); color: #fff; }
.btn-cta:hover { background: #e2551f; }
.btn-outline { border: 1px solid var(--border); color: var(--ink); background: #fff; }
.btn-lg { padding: 14px 32px; font-size: 1.05rem; }
.header-cta { flex-shrink: 0; }
.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; padding: 6px; }
.hamburger span { width: 24px; height: 2px; background: var(--ink); display: block; }

/* Hero */
.hero {
  position: relative; margin-top: 68px; min-height: 720px;
  display: flex; align-items: center; overflow: hidden;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
}
.hero-bg { position: absolute; inset: 0; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; opacity: 1; }
.hero-content {
  position: relative; z-index: 2; color: #fff; max-width: 640px; padding: 60px 20px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.55);
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(90deg, rgba(10,40,44,0.55) 0%, rgba(10,40,44,0.15) 55%, transparent 80%);
}
.hero-badge {
  display: inline-block; background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.4);
  padding: 6px 14px; border-radius: 20px; font-size: 0.85rem; margin-bottom: 18px;
}
.hero h1 { font-size: 2.6rem; margin: 0 0 16px; line-height: 1.25; }
.hero p { font-size: 1.1rem; opacity: 0.92; margin-bottom: 28px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Sections */
section.block { padding: 72px 0; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 44px; }
.section-head h2 { font-size: 1.9rem; margin-bottom: 12px; }
.section-head p { color: var(--muted); }
.tag { display: inline-block; background: rgba(14,124,134,0.1); color: var(--primary-dark); font-size: 0.8rem; font-weight: 700; padding: 4px 10px; border-radius: 6px; margin-bottom: 10px; }

/* Case grid */
.case-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.case-card {
  display: block; background: var(--card); border: 1px solid var(--border); border-radius: 14px; overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.case-card:hover { transform: translateY(-6px); box-shadow: 0 16px 30px rgba(14,60,66,0.14); }
.case-card img { width: 100%; height: 260px; object-fit: cover; }
.case-card .case-body { padding: 18px 20px; }
.case-card h3 { margin: 8px 0 6px; font-size: 1.1rem; }
.case-card p { color: var(--muted); font-size: 0.92rem; margin: 0; }

/* Service grid */
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service-card { display: block; background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 28px 22px; text-align: center; }
.service-card .icon { font-size: 2rem; margin-bottom: 12px; }
.service-card h3 { margin: 0 0 8px; font-size: 1.05rem; }
.service-card p { color: var(--muted); font-size: 0.9rem; margin: 0 0 14px; }

/* Photo strip */
.photo-strip { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.photo-strip img { width: 100%; height: 200px; object-fit: cover; border-radius: 10px; transition: transform 0.25s ease; }
.photo-strip img:hover { transform: translateY(-4px); }

/* Trust */
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; text-align: center; }
.trust-item .num { font-size: 2.2rem; font-weight: 800; color: var(--primary-dark); }
.trust-item .label { color: var(--muted); margin-top: 6px; }

/* Process */
.process-steps { display: flex; gap: 18px; flex-wrap: wrap; justify-content: center; }
.process-step { flex: 1 1 200px; background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 24px 18px; text-align: center; }
.process-step .step-num { display: inline-flex; width: 34px; height: 34px; border-radius: 50%; background: var(--primary); color: #fff; align-items: center; justify-content: center; font-weight: 700; margin-bottom: 10px; }

/* CTA section */
.cta-section {
  background: radial-gradient(circle at 20% 20%, rgba(255,255,255,0.12), transparent 60%), linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff; padding: 72px 20px; text-align: center;
}
.cta-inner h2 { font-size: 2rem; margin-bottom: 12px; }
.cta-inner p { opacity: 0.9; margin-bottom: 26px; }
.trust-badges { list-style: none; display: flex; gap: 24px; justify-content: center; margin: 30px 0 0; padding: 0; flex-wrap: wrap; font-size: 0.9rem; opacity: 0.9; }

/* Footer */
.site-footer { background: #10262a; color: #cfe0e1; padding: 56px 20px 24px; }
.footer-inner { max-width: 1160px; margin: 0 auto; display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer-col h3, .footer-col h4 { color: #fff; margin: 0 0 14px; }
.footer-col p { font-size: 0.88rem; color: #a9bdbe; }
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.footer-col a { font-size: 0.88rem; color: #cfe0e1; }
.footer-col a:hover { color: #fff; }
.footer-copy { text-align: center; margin: 40px 0 0; font-size: 0.8rem; color: #7d9394; }

/* Floating */
.floating-buttons { position: fixed; right: 20px; bottom: 24px; z-index: 200; display: flex; flex-direction: column; gap: 12px; align-items: center; }
.fab { width: 56px; height: 56px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; box-shadow: 0 8px 20px rgba(0,0,0,0.2); }
.fab-call { background: var(--accent); color: #fff; position: relative; }
.fab-top { background: #fff; border: 1px solid var(--border); cursor: pointer; }
.pulse-ring {
  position: absolute; inset: -6px; border-radius: 50%; border: 2px solid var(--accent);
  animation: pulse 3s infinite;
}
@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.8; }
  70% { transform: scale(1.4); opacity: 0; }
  100% { opacity: 0; }
}

/* Page hero (derivative pages) */
.page-hero {
  margin-top: 68px; min-height: 320px; display: flex; align-items: center;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary)); position: relative; overflow: hidden;
}
.page-hero .hero-content { padding: 48px 20px; }
.page-hero h1 { font-size: 2.1rem; margin: 0 0 12px; }

/* Photo paragraph */
.photo-block { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; margin-bottom: 56px; }
.photo-block img { border-radius: 14px; }
.photo-block:nth-child(even) { direction: rtl; }
.photo-block:nth-child(even) > * { direction: ltr; }
.case-detail { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.case-photo { max-width: 480px; width: 100%; aspect-ratio: 1 / 1; object-fit: cover; margin: 0 auto 28px; border-radius: 14px; }
.case-detail h2 { margin-top: 4px; }
.case-detail p { text-align: left; }

.region-photos { display: flex; justify-content: center; gap: 16px; margin-bottom: 40px; flex-wrap: wrap; }
.region-photos img { width: 260px; height: 260px; object-fit: cover; border-radius: 14px; }
.related-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.related-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; }
.related-card:hover { border-color: var(--primary); }

/* Sitemap page */
.sitemap-search { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.sitemap-search input { flex: 1 1 260px; padding: 12px 16px; border-radius: 8px; border: 1px solid var(--border); font-size: 1rem; }
.filter-btn { padding: 8px 16px; border-radius: 20px; border: 1px solid var(--border); background: #fff; cursor: pointer; font-size: 0.9rem; }
.filter-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.result-count { color: var(--muted); font-size: 0.9rem; margin: 14px 0; }
.sitemap-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; }
.sitemap-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; text-align: center; transition: 0.3s ease; }
.sitemap-card:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(14,60,66,0.12); border-color: var(--primary); }
.sitemap-card .icon { font-size: 1.8rem; margin-bottom: 8px; }
.no-result { text-align: center; color: var(--muted); padding: 40px 0; }

/* 404 */
.error-page { margin-top: 68px; min-height: 60vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: 40px 20px; }
.error-page h1 { font-size: 4rem; margin: 0; color: var(--primary); }
.error-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 24px; }

@media (max-width: 768px) {
  .main-nav { display: none; }
  .hamburger { display: flex; }
  .hero h1 { font-size: 1.9rem; }
  .case-grid, .service-grid, .trust-grid, .related-links { grid-template-columns: 1fr; }
  .photo-strip { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; }
  .photo-block { grid-template-columns: 1fr; }
  .photo-block:nth-child(even) { direction: ltr; }
}

.main-nav.open {
  display: flex; position: absolute; top: 100%; left: 0; right: 0; background: #fff;
  flex-direction: column; padding: 16px 20px; border-bottom: 1px solid var(--border); gap: 14px;
}