.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(244, 247, 248, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.brand { display: flex; align-items: center; gap: 9px; line-height: 1.1; }
.brand-logo { width: 32px; height: 32px; flex-shrink: 0; }
.brand-word {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand-word span { color: var(--accent); }
.brand-sub {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-muted);
  letter-spacing: 0.02em;
}
@media (max-width: 560px) { .brand-sub { display: none; } }

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}
.nav a:not(.nav-cta) {
  font-weight: 700;
  font-size: 14.5px;
  color: var(--ink);
  transition: color 0.2s ease;
}
.nav a:not(.nav-cta):hover { color: var(--accent); }
.nav .nav-cta {
  padding: 10px 20px;
  color: #fff;
  font-size: 14px;
}
.nav .nav-cta:hover { color: #fff; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  height: 24px;
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
}

@media (max-width: 900px) {
  .nav-toggle { display: flex; }
  .nav {
    position: absolute;
    top: 74px;
    left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 20px 28px;
    gap: 16px;
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.22s ease;
  }
  .nav.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav .nav-cta { align-self: flex-start; }
}

/* ---- Footer ---- */
.site-footer {
  background: var(--bg-ink);
  color: #A9BCC4;
  padding: 64px 0 28px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer-brand-row { display: flex; align-items: center; gap: 9px; }
.footer-brand .brand-word { color: #fff; font-size: 22px; }
.footer-brand .brand-word span { color: var(--accent); }
.footer-tagline { font-size: 14px; color: #7E939C; margin-top: 10px; max-width: 320px; }

.footer-biz {
  font-size: 13px;
  line-height: 2;
}
.footer-biz strong { color: #fff; font-weight: 700; }

.footer-contact { display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.footer-contact .btn { width: max-content; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 24px;
  font-size: 11.5px;
  color: #62777F;
}

@media (max-width: 640px) {
  .footer-inner { flex-direction: column; gap: 28px; }
}

/* ---- Floating action buttons ---- */
.floating-buttons {
  position: fixed;
  right: 20px;
  bottom: 24px;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.fb-btn {
  position: relative;
  width: 52px; height: 52px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  box-shadow: 0 8px 20px rgba(16, 26, 34, 0.28);
  transition: transform 0.2s ease;
}
.fb-btn svg { width: 26px; height: 26px; }
.fb-btn:hover { transform: scale(1.08); }
.fb-btn::after {
  content: attr(data-tooltip);
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--bg-ink);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  padding: 7px 12px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s ease, visibility 0.2s ease;
}
.fb-btn:hover::after { opacity: 1; visibility: visible; }
@media (max-width: 640px) { .fb-btn::after { display: none; } }

.fb-tel { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); }
.fb-kakao { background: #FEE500; }