@import url("https://fonts.googleapis.com/css2?family=Black+Han+Sans&display=swap");
@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable.min.css");

:root {
  --c-primary: #1D4ED8;
  --c-second: #60A5FA;
  --c-bg: #FFFFFF;
  --c-text: #111827;
  --c-accent: #FBBF24;
  --radius: 16px;
  --maxw: 960px;
  --leading: 1.75;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  font-family: "Pretendard Variable", Pretendard, -apple-system, sans-serif;
  color: var(--c-text);
  background: var(--c-bg);
  line-height: var(--leading);
}

h1, h2, h3, .oh-mark span {
  font-family: "Black Han Sans", "Pretendard Variable", sans-serif;
  font-weight: 400;
}

a { color: inherit; }
img { max-width: 100%; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--c-primary);
  color: #fff;
  padding: 10px 16px;
  z-index: 300;
}
.skip-link:focus { left: 8px; top: 8px; }

:focus-visible {
  outline: 3px solid var(--c-accent);
  outline-offset: 2px;
}

/* ---------- Transparent overlay header ---------- */
.overlay-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 40px;
  background: transparent;
  transition: background-color 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}
.overlay-header.scrolled {
  background: rgba(17, 24, 39, 0.92);
  box-shadow: 0 6px 20px rgba(17, 24, 39, 0.18);
  padding: 12px 40px;
}
.oh-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
}
.oh-mark span {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
}
.oh-nav {
  display: flex;
  gap: 26px;
}
.oh-nav a {
  text-decoration: none;
  color: #fff;
  font-size: 0.92rem;
  opacity: 0.92;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}
.oh-nav a:hover,
.oh-nav a:focus-visible {
  border-bottom-color: var(--c-accent);
}
.hamburger-btn { display: none; }

/* ---------- Hero: large typography + image overlay ---------- */
.hero {
  position: relative;
  min-height: 82vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.hero-media {
  position: absolute;
  inset: 0;
}
.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.hero-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(17,24,39,0.35) 0%, rgba(17,24,39,0.55) 55%, rgba(17,24,39,0.88) 100%);
}
.hero-copy {
  position: relative;
  z-index: 2;
  color: #fff;
  padding: 0 40px 64px;
  max-width: 900px;
}
.hero-copy h1 {
  font-size: clamp(2.6rem, 7vw, 5.2rem);
  line-height: 1.05;
  margin: 0 0 18px;
  letter-spacing: -0.01em;
}
.hero-sub {
  font-size: 1.08rem;
  color: #E5EDFF;
  max-width: 620px;
  margin: 0 0 30px;
}

/* CTA group */
.cta-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.94rem;
  box-shadow: 0 8px 20px rgba(17,24,39,0.16);
}
.cta--call {
  background: var(--c-accent);
  color: #111827;
}
.cta--sms {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.6);
  backdrop-filter: blur(2px);
}
.cta:hover { transform: translateY(-3px); }

.cta-mid { margin: 8px 0 36px; }

/* ---------- Full-bleed 4-column category grid ---------- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: 100%;
  background: var(--c-primary);
}
.cg-item {
  padding: 36px 28px;
  border-left: 1px solid rgba(255,255,255,0.18);
  color: #fff;
}
.cg-item:first-child { border-left: none; }
.cg-num {
  display: block;
  font-family: "Black Han Sans", sans-serif;
  font-size: 1.6rem;
  color: var(--c-accent);
  margin-bottom: 10px;
}
.cg-item h3 {
  font-size: 1.08rem;
  margin: 0 0 10px;
}
.cg-item p {
  font-size: 0.86rem;
  color: #DCE7FF;
  margin: 0;
}

/* ---------- Body wrap (maxwidth per diff matrix) ---------- */
.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

/* Sections: divider = bgshift (alternating background bands, no borders) */
section.content-block {
  padding: 56px 0;
}
section.content-block.alt {
  background: #F2F6FF;
  margin: 0 -24px;
  padding: 56px 24px;
  border-radius: var(--radius);
}

.content-block h2 {
  font-size: 1.7rem;
  color: var(--c-primary);
  margin: 0 0 20px;
  padding-bottom: 12px;
  border-bottom: 4px solid var(--c-accent);
  display: inline-block;
}
.content-block p { margin: 0 0 14px; color: #1F2937; }
.content-block ul { margin: 0 0 14px; padding-left: 20px; }
.content-block li { margin-bottom: 8px; }

table.svc-table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 20px;
  font-size: 0.92rem;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(17,24,39,0.08);
}
table.svc-table th, table.svc-table td {
  border: 1px solid #DCE7FF;
  padding: 12px 14px;
  text-align: left;
}
table.svc-table th {
  background: var(--c-primary);
  color: #fff;
}
table.svc-table tbody tr:nth-child(even) { background: #F2F6FF; }

/* Photo row */
.photo-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin: 12px 0 48px;
}
.photo-row figure { margin: 0; }
.photo-row img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  display: block;
  border-radius: var(--radius);
  box-shadow: 0 10px 24px rgba(17,24,39,0.12);
}
.photo-row figcaption {
  font-size: 0.82rem;
  color: #4B5563;
  margin-top: 10px;
}

/* related links */
.related-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 20px 0 4px;
}
.related-links a {
  text-decoration: none;
  background: #F2F6FF;
  border: 1px solid #C7D9FF;
  color: var(--c-primary);
  padding: 9px 16px;
  border-radius: var(--radius);
  font-size: 0.88rem;
}
.related-links a:hover { background: #E1EAFF; }

/* Footer */
.site-footer {
  background: #111827;
  color: #E5E7EB;
  padding: 44px 0 60px;
  margin-top: 24px;
}
.footer-inner { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.footer-brand {
  font-family: "Black Han Sans", sans-serif;
  font-size: 1.1rem;
  color: #fff;
  margin: 0 0 14px;
}
.footer-biz {
  display: grid;
  grid-template-columns: 100px 1fr;
  row-gap: 6px;
  margin: 0 0 16px;
  font-size: 0.85rem;
  color: #9CA3AF;
}
.footer-biz dt { font-weight: 600; color: #6B7280; }
.footer-biz dd { margin: 0; color: #D1D5DB; }
.footer-biz a { color: var(--c-second); text-decoration: underline; }
.footer-copy { font-size: 0.78rem; color: #6B7280; margin: 0; }

/* Mobile overlay nav */
.mobile-overlay { display: none; }

@media (max-width: 1024px) {
  .overlay-header { padding: 14px 20px; }
  .overlay-header.scrolled { padding: 10px 20px; }
  .oh-nav { display: none; }
  .hamburger-btn {
    display: inline-flex;
    background: transparent;
    border: none;
    color: #fff;
    cursor: pointer;
    padding: 6px;
  }
  .mobile-overlay.open {
    display: flex;
    position: fixed;
    inset: 0;
    background: var(--c-primary);
    z-index: 300;
    flex-direction: column;
    padding: 28px 24px;
    gap: 6px;
  }
  .mobile-overlay a {
    color: #fff;
    text-decoration: none;
    font-size: 1.1rem;
    padding: 14px 4px;
    border-bottom: 1px solid rgba(255,255,255,0.2);
  }
  .mobile-overlay .close-btn {
    align-self: flex-end;
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
    margin-bottom: 12px;
  }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .cg-item:nth-child(3) { border-left: none; }
}

@media (max-width: 768px) {
  .photo-row { grid-template-columns: 1fr; }
  .footer-biz { grid-template-columns: 90px 1fr; }
  .hero-copy { padding: 0 24px 48px; }
}

@media (max-width: 480px) {
  .category-grid { grid-template-columns: 1fr; }
  .cg-item { border-left: none; border-top: 1px solid rgba(255,255,255,0.18); }
  .cg-item:first-child { border-top: none; }
  .cta-group { flex-direction: column; }
  .cta { justify-content: center; }
  section.content-block.alt { margin: 0 -16px; padding: 44px 16px; }
}

/* Single animation type for this page: hover interactions (CTA lift, photo zoom) */
.photo-row img { transition: transform 0.4s ease; }
.photo-row figure:hover img { transform: scale(1.03); }