:root {
  --primary: #0F766E;
  --primary-hover: #115E59;
  --primary-soft: #CCFBF1;
  --accent: #14B8A6;
  --bg: #FFFFFF;
  --bg-alt: #F8FAFC;
  --bg-section: #F1F5F9;
  --text: #0F172A;
  --text-soft: #334155;
  --muted: #64748B;
  --border: #E2E8F0;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --maxw: 1200px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Pretendard", "Apple SD Gothic Neo", "Malgun Gothic", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--primary); }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* === Top utility bar === */
.topbar {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--muted);
}
.topbar .container {
  display: flex;
  justify-content: flex-end;
  gap: 18px;
  height: 36px;
  align-items: center;
}
.topbar a:hover { color: var(--primary); }

/* === Header / Nav === */
.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.5px;
}
.brand .logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 16px;
}
.brand .brand-name { color: var(--text); }
.brand .brand-name .accent { color: var(--primary); }

.nav {
  display: flex;
  gap: 4px;
  align-items: center;
}
.nav-item {
  position: relative;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  font-weight: 600;
  font-size: 15px;
  color: var(--text-soft);
  border-radius: 8px;
  transition: background .15s, color .15s;
}
.nav-link:hover { background: var(--bg-alt); color: var(--primary); }
.nav-item.active .nav-link { color: var(--primary); background: var(--primary-soft); }

.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 240px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  opacity: 0;
  transform: translateY(-6px);
  pointer-events: none;
  transition: opacity .15s, transform .15s;
}
.dropdown.wide { min-width: 560px; display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.nav-item:hover .dropdown,
.nav-item:focus-within .dropdown { opacity: 1; transform: translateY(0); pointer-events: auto; }
.dropdown-title {
  grid-column: 1 / -1;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--muted);
  padding: 10px 12px 4px;
}
.dropdown a {
  display: block;
  padding: 9px 12px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--text-soft);
}
.dropdown a:hover { background: var(--bg-alt); color: var(--primary); }

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  background: var(--primary);
  color: #fff !important;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  border: 0;
  cursor: pointer;
  transition: background .15s, transform .15s;
}
.cta-btn:hover { background: var(--primary-hover); transform: translateY(-1px); color: #fff !important; }
.cta-btn.ghost { background: transparent; color: var(--primary) !important; border: 1.5px solid var(--primary); }
.cta-btn.ghost:hover { background: var(--primary-soft); color: var(--primary-hover) !important; }

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.menu-toggle span {
  width: 18px; height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* === Hero === */
.hero {
  background: linear-gradient(180deg, var(--primary-soft) 0%, var(--bg) 100%);
  padding: 80px 0 60px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(28px, 4vw, 44px);
  margin: 0 0 12px;
  letter-spacing: -1px;
}
.hero h1 .accent { color: var(--primary); }
.hero p.lead {
  color: var(--muted);
  font-size: 17px;
  max-width: 620px;
  margin: 0 auto 28px;
}
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* === Section === */
.section { padding: 64px 0; }
.section.alt { background: var(--bg-alt); }
.section-head {
  text-align: center;
  margin-bottom: 36px;
}
.section-head .eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--primary);
  text-transform: uppercase;
  background: var(--primary-soft);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: clamp(24px, 3vw, 32px);
  margin: 0 0 8px;
  letter-spacing: -.5px;
}
.section-head p { color: var(--muted); margin: 0; }

/* === Grids & cards === */
.grid {
  display: grid;
  gap: 20px;
}
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: transform .15s, box-shadow .15s, border-color .15s;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent);
}
.card .icon {
  width: 44px; height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 10px;
  font-size: 20px;
  margin-bottom: 14px;
}
.card h3 { margin: 0 0 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 14px; }
.card .card-links {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.card .tag {
  font-size: 12px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text-soft);
  padding: 4px 10px;
  border-radius: 999px;
}
.card .tag:hover { background: var(--primary-soft); border-color: var(--primary); color: var(--primary); }

/* === Region quick find (compact pills) === */
.region-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.region-block {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  transition: border-color .15s, box-shadow .15s, transform .15s;
}
.region-block:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
}
.region-block__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.region-block__head h3 {
  margin: 0;
  font-size: 18px;
  flex: 1;
  letter-spacing: -.3px;
}
.region-mark {
  width: 32px; height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 8px;
  font-weight: 800;
  font-size: 14px;
  flex-shrink: 0;
}
.region-more {
  font-size: 13px;
  color: var(--primary);
  font-weight: 600;
  white-space: nowrap;
}
.region-more:hover { color: var(--primary-hover); }
.region-block__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.region-block__pills a {
  display: inline-block;
  font-size: 13px;
  padding: 7px 14px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-soft);
  transition: background .15s, color .15s, border-color .15s, transform .15s;
}
.region-block__pills a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  transform: translateY(-1px);
}

@media (max-width: 720px) {
  .region-grid { grid-template-columns: 1fr; gap: 12px; }
  .region-block { padding: 16px 18px; }
  .region-block__head { margin-bottom: 12px; gap: 10px; }
  .region-block__head h3 { font-size: 16px; }
  .region-mark { width: 28px; height: 28px; font-size: 13px; }
  .region-block__pills a { font-size: 12.5px; padding: 6px 12px; }
}

/* List cards */
.list-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.list-card h3 {
  margin: 0 0 14px;
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.list-card h3 .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--primary);
  display: inline-block;
}
.list-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.list-card li {
  padding: 8px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 14px;
  color: var(--text-soft);
}
.list-card li:last-child { border-bottom: 0; }
.list-card li a { display: flex; justify-content: space-between; align-items: center; }
.list-card li a::after { content: "›"; color: var(--muted); font-size: 18px; }

/* Review card */
.review {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.review .stars { color: #F59E0B; font-size: 14px; margin-bottom: 8px; }
.review p { margin: 0 0 14px; color: var(--text-soft); font-size: 14px; line-height: 1.65; }
.review .meta { font-size: 12px; color: var(--muted); display: flex; justify-content: space-between; }
.review .meta .badge {
  background: var(--primary-soft);
  color: var(--primary);
  padding: 3px 8px;
  border-radius: 999px;
  font-weight: 600;
}

/* Safety strip */
.safety {
  background: linear-gradient(135deg, #0F766E 0%, #14B8A6 100%);
  color: #fff;
  padding: 48px 0;
  border-radius: var(--radius);
}
.safety .container { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: center; }
.safety h2 { margin: 0 0 8px; font-size: 26px; color: #fff; }
.safety p { margin: 0 0 16px; opacity: .92; }
.safety ul { padding-left: 18px; margin: 0; }
.safety ul li { margin-bottom: 6px; }
.safety .cta-btn { background: #fff; color: var(--primary) !important; }
.safety .cta-btn:hover { background: var(--primary-soft); }

/* Page header (for sub pages) */
.page-header {
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
  padding: 56px 0 40px;
}
.page-header h1 {
  font-size: clamp(24px, 3.2vw, 36px);
  margin: 0 0 6px;
  letter-spacing: -.5px;
}
.page-header p { color: var(--muted); margin: 0; }
.breadcrumb {
  display: flex;
  gap: 6px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 14px;
}
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--border); }

/* Anchor nav (sub-section quick links) */
.anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 0;
}
.anchor-nav a {
  font-size: 13px;
  background: #fff;
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 999px;
  color: var(--text-soft);
}
.anchor-nav a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }

.subsection {
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}
.subsection:last-child { border-bottom: 0; }
.subsection h2 { font-size: 24px; margin: 0 0 6px; }
.subsection .sub-desc { color: var(--muted); margin: 0 0 24px; }

/* Notice / callout */
.callout {
  background: #FFFBEB;
  border: 1px solid #FDE68A;
  color: #92400E;
  border-radius: var(--radius);
  padding: 18px 22px;
  font-size: 14px;
}
.callout strong { color: #78350F; }
.callout.info { background: var(--primary-soft); border-color: #99F6E4; color: #115E59; }
.callout.info strong { color: var(--primary-hover); }

/* FAQ */
details.faq {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  margin-bottom: 10px;
}
details.faq summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after {
  content: "+";
  color: var(--primary);
  font-size: 22px;
  line-height: 1;
  font-weight: 400;
}
details.faq[open] summary::after { content: "−"; }
details.faq p { margin: 12px 0 0; color: var(--text-soft); }

/* Footer */
.site-footer {
  background: #0F172A;
  color: #94A3B8;
  padding: 56px 0 32px;
  margin-top: 60px;
}
.site-footer .container { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 36px; }
.site-footer h4 { color: #fff; font-size: 14px; margin: 0 0 12px; letter-spacing: .04em; }
.site-footer a { color: #CBD5E1; font-size: 13px; display: block; padding: 4px 0; }
.site-footer a:hover { color: var(--accent); }
.site-footer .brand { color: #fff; margin-bottom: 12px; }
.site-footer .brand .brand-name { color: #fff; }
.site-footer p { font-size: 13px; line-height: 1.6; color: #94A3B8; margin: 0 0 6px; }
.footer-bottom {
  border-top: 1px solid #1E293B;
  margin-top: 36px;
  padding-top: 20px;
  font-size: 12px;
  text-align: center;
  color: #64748B;
}

/* Utility */
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }

/* Responsive */
@media (max-width: 960px) {
  .grid.cols-3, .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .site-footer .container { grid-template-columns: 1fr 1fr; }
  .safety .container { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav, .topbar { display: none; }
  .menu-toggle { display: flex; }
  .nav.open {
    display: flex;
    position: fixed;
    top: 72px; left: 0; right: 0; bottom: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px;
    overflow-y: auto;
    z-index: 40;
    gap: 0;
  }
  .nav.open .nav-item { width: 100%; border-bottom: 1px solid var(--border); }
  .nav.open .nav-link { width: 100%; padding: 16px 4px; font-size: 16px; }
  .nav.open .dropdown {
    position: static;
    opacity: 1;
    transform: none;
    pointer-events: auto;
    box-shadow: none;
    border: 0;
    padding: 0 0 12px 12px;
    background: transparent;
    min-width: 0;
    grid-template-columns: 1fr !important;
  }
  .header-inner .cta-btn { display: none; }
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
  .site-footer .container { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 40px; }
  .section { padding: 48px 0; }
}