@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/variable/pretendardvariable.min.css");
@import url("https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@400;500;700&display=swap");

:root {
  --c-primary: #1F2937;
  --c-second: #4B5563;
  --c-bg: #F3F4F6;
  --c-text: #111827;
  --c-accent: #EF4444;
  --radius: 16px;
  --maxw: 960px;
  --leading: 1.90;
}

* { 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: "Noto Sans KR", "Pretendard Variable", -apple-system, sans-serif;
  color: var(--c-text);
  background: #FFFFFF;
  line-height: var(--leading);
}

h1, h2, .hh-mark span {
  font-family: "Pretendard Variable", "Noto Sans KR", sans-serif;
  font-weight: 700;
}

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;
}

/* ---------- Thin hairline header ---------- */
.hairline-header {
  position: sticky;
  top: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 40px;
  background: #FFFFFF;
  border-bottom: 1px solid #E5E7EB;
}
.hh-mark {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--c-primary);
}
.hh-mark span {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
}
.hh-nav {
  display: flex;
  gap: 22px;
}
.hh-nav a {
  text-decoration: none;
  color: var(--c-second);
  font-size: 0.92rem;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
}
.hh-nav a:hover,
.hh-nav a:focus-visible {
  color: var(--c-primary);
  border-bottom-color: var(--c-accent);
}
.hamburger-btn { display: none; }

/* ---------- Hero: scope division diagram ---------- */
.hero {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 56px 24px 44px;
}
.hero-eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-accent);
  font-weight: 700;
  margin: 0 0 14px;
}
.hero h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin: 0 0 16px;
  color: var(--c-primary);
}
.hero-sub {
  font-size: 1.04rem;
  color: var(--c-second);
  max-width: 640px;
  margin: 0 0 32px;
}

.scope-diagram {
  display: flex;
  align-items: stretch;
  gap: 14px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.scope-node {
  flex: 1 1 200px;
  padding: 20px 18px;
  border-radius: var(--radius);
  color: #fff;
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.22), inset 0 0 0 1px rgba(255,255,255,0.08);
}
.node-included { background: var(--c-primary); }
.node-negotiable { background: var(--c-second); }
.node-excluded { background: var(--c-accent); }
.node-label {
  display: block;
  font-weight: 700;
  font-size: 1.02rem;
  margin-bottom: 6px;
}
.scope-node p { margin: 0; font-size: 0.86rem; opacity: 0.92; }
.node-arrow {
  align-self: center;
  color: var(--c-second);
  flex-shrink: 0;
}

/* 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: inset 0 0 0 1.5px rgba(255,255,255,0.25), inset 0 -3px 0 rgba(0,0,0,0.14);
}
.cta--call {
  background: var(--c-primary);
  color: #fff;
}
.cta--sms {
  background: #fff;
  color: var(--c-primary);
  border: 1.5px solid var(--c-primary);
  box-shadow: inset 0 0 0 1.5px rgba(31,41,55,0.06);
}
.cta:hover { transform: translateY(-2px); }

.cta-mid { max-width: var(--maxw); margin: 8px auto 36px; padding: 0 24px; }

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

/* Sections: divider = bgshift (alternating background bands) */
section.content-block {
  padding: 48px 0;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
section.content-block.in-view {
  opacity: 1;
  transform: translateY(0);
}
section.content-block.alt {
  background: var(--c-bg);
  margin: 0 -24px;
  padding: 48px 24px;
  border-radius: var(--radius);
}

.content-block h2 {
  font-size: 1.6rem;
  color: var(--c-primary);
  margin: 0 0 18px;
  padding-bottom: 10px;
  border-bottom: 4px solid var(--c-accent);
  display: inline-block;
}
.content-block p { margin: 0 0 14px; color: var(--c-text); }
.content-block ul { margin: 0 0 14px; padding-left: 20px; }
.content-block li { margin-bottom: 8px; color: var(--c-text); }

/* Matrix table (2-column include/exclude comparison, shadow = inset) */
.matrix-wrap {
  border-radius: var(--radius);
  box-shadow: inset 0 0 0 1px #E5E7EB, inset 0 3px 10px rgba(17,24,39,0.08);
  overflow: hidden;
  margin: 8px 0 20px;
}
table.scope-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}
table.scope-table th, table.scope-table td {
  border-bottom: 1px solid #E5E7EB;
  padding: 12px 14px;
  text-align: left;
}
table.scope-table th {
  background: var(--c-primary);
  color: #fff;
}
table.scope-table td:nth-child(2),
table.scope-table td:nth-child(3),
table.scope-table td:nth-child(4),
table.scope-table th:nth-child(2),
table.scope-table th:nth-child(3),
table.scope-table th:nth-child(4) {
  text-align: center;
  width: 110px;
}
table.scope-table tbody tr:nth-child(even) { background: #FAFAFB; }
table.scope-table tbody tr:last-child td { border-bottom: none; }

/* Photo row */
.photo-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: var(--maxw);
  margin: 12px auto 44px;
  padding: 0 24px;
}
.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: inset 0 0 0 1px rgba(17,24,39,0.12), inset 0 3px 10px rgba(17,24,39,0.15);
}
.photo-row figcaption {
  font-size: 0.82rem;
  color: var(--c-second);
  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: #fff;
  border: 1px solid #E5E7EB;
  color: var(--c-primary);
  padding: 9px 16px;
  border-radius: var(--radius);
  font-size: 0.88rem;
  box-shadow: inset 0 0 0 1px rgba(31,41,55,0.04);
}
.related-links a:hover { background: var(--c-bg); }

/* Footer */
.site-footer {
  background: var(--c-primary);
  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: "Pretendard Variable", sans-serif;
  font-weight: 700;
  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: #FCA5A5; text-decoration: underline; }
.footer-copy { font-size: 0.78rem; color: #6B7280; margin: 0; }

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

@media (max-width: 1024px) {
  .hairline-header { padding: 14px 20px; }
  .hh-nav { display: none; }
  .hamburger-btn {
    display: inline-flex;
    background: transparent;
    border: none;
    color: var(--c-primary);
    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;
  }
}

@media (max-width: 768px) {
  .photo-row { grid-template-columns: repeat(2, 1fr); }
  .footer-biz { grid-template-columns: 90px 1fr; }
  .scope-diagram { flex-direction: column; }
  .node-arrow { transform: rotate(90deg); align-self: flex-start; margin-left: 10px; }
}

@media (max-width: 480px) {
  .photo-row { grid-template-columns: 1fr; }
  .cta-group { flex-direction: column; }
  .cta { justify-content: center; }
  section.content-block.alt { margin: 0 -16px; padding: 40px 16px; }
  table.scope-table { font-size: 0.84rem; }
  table.scope-table th, table.scope-table td { padding: 9px 8px; }
}

/* Single animation type for this page: scroll reveal on content sections */