.site-header {
  position: relative;
  z-index: 1;
  padding: 18px 20px;
  background:
    linear-gradient(
      180deg,
      rgba(14, 29, 69, 1) 0%,
      rgba(20, 41, 95, 1) 100%
    );
  color: #fff;
  box-shadow: none;
  overflow: visible;
}

.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -64px;
  height: 64px;
  z-index: 0;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    rgba(20, 41, 95, 0.98) 0%,
    rgba(20, 41, 95, 0.62) 36%,
    rgba(122, 146, 190, 0.22) 68%,
    rgba(238, 243, 251, 0) 100%
  );
}

.site-header-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 12px;
}

.site-title {
  margin: 0;
  flex-shrink: 0;
}

/* 以前のロゴ下グラデを無効化 */
.site-title::after {
  content: none;
}

.site-title-link {
  display: inline-block;
  text-decoration: none;
}

.site-title-image {
  display: block;
  width: auto;
  max-width: 240px;
  max-height: 72px;
  height: auto;
}

.site-header-copy {
  min-width: 0;
}

.site-header-kicker {
  margin: 0 0 6px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.5;
}

.site-header-kicker span,
.site-header-lead span {
  display: inline;
}

.site-header-lead {
  margin: 0;
  color: #fff;
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: 0.01em;
}

/* ナビ保留 */
.site-nav {
  display: none;
}

@media (max-width: 700px) {
  .site-header {
    padding: 12px 14px 14px;
  }

  .site-header::after {
    bottom: -52px;
    height: 52px;
  }

  .site-header-inner {
    flex-direction: column;
    gap: 6px;
    padding: 0 6px;
    text-align: center;
  }

  .site-title-image {
    max-width: 180px;
    max-height: 48px;
  }

  .site-header-kicker {
    font-size: 11px;
    line-height: 1.55;
    margin-bottom: 4px;
  }

    .site-header-kicker span,
  .site-header-lead span {
    display: block;
  }

  .site-header-lead {
    font-size: 24px;
    line-height: 1.25;
  }
}