/* Shared header for sub pages (column / company / privacy / tokushoho).
   Mirrors the top page REAL-mode header in its solid (scrolled) state. */
.col-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(245, 245, 243, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid #e5e5e3;
  box-shadow: 0 1px 8px rgba(0,0,0,0.03);
  height: 72px;
  display: flex;
  align-items: center;
  font-family: 'Space Grotesk', system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
}
.col-header__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.col-header__logo { display: flex; align-items: center; }
.col-header__logo-img { height: 40px; width: auto; filter: brightness(0); }
.col-header__nav {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-left: auto;
}
.col-header__nav a {
  padding: 0 10px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: #555;
  transition: color 0.3s;
  position: relative;
  white-space: nowrap;
}
.col-header__nav a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1px;
  background: #1a1a1a;
  transition: width 0.3s;
}
.col-header__nav a:hover { color: #1a1a1a; }
.col-header__nav a:hover::after { width: 100%; }

.col-header__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
  background: none;
  border: 0;
}
.col-header__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: #1a1a1a;
  transition: transform 0.3s, opacity 0.3s;
}
.col-header__hamburger.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.col-header__hamburger.is-open span:nth-child(2) { opacity: 0; }
.col-header__hamburger.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.col-mobile-nav {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 100dvh;
  background: #fff;
  z-index: 999;
  flex-direction: column;
  align-items: center;
  padding: 100px 24px 0;
  overflow-y: auto;
  font-family: 'Space Grotesk', system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
}
.col-mobile-nav.is-open { display: flex; }
.col-mobile-nav a {
  display: block;
  width: 100%;
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #1a1a1a;
  padding: 14px 0;
  text-align: center;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}
.col-mobile-nav a:last-child { border-bottom: none; }

@media (max-width: 1180px) {
  .col-header__nav { display: none; }
  .col-header__hamburger { display: flex; }
}
@media (max-width: 600px) {
  .col-header { height: 60px; }
  .col-header__inner { padding: 0 16px; }
  .col-header__logo-img { height: 32px; }
  .col-mobile-nav { padding-top: 84px; }
}

@media (max-width: 1320px) {
  .col-header__nav { gap: 8px; }
  .col-header__nav a { padding: 0 8px; letter-spacing: 0.03em; }
}


/* Nav text: black */
.col-header__nav a,
.col-mobile-nav a { color: #111; }
.col-header__nav a:hover { color: #111; opacity: 0.6; }