/* ===== 共通フッター ===== */
footer {
  background: #3a3a3a;
  padding: 2.5rem 2rem 2rem;
  margin-top: 4rem;
  width: 100%;
  box-sizing: border-box;
  overflow-x: hidden;
}
.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
}
.footer-logo {
  margin-bottom: 1.5rem;
  text-align: center;
}
.footer-logo-img {
  height: 26px;
  width: auto;
  display: inline-block;
  filter: brightness(0) invert(1);
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-nav {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}
.footer-nav a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 0.83rem;
  transition: color 0.2s;
}
.footer-nav a:hover { color: #ffffff; }
.footer-copy {
  flex: 1;
  text-align: right;
  color: rgba(255,255,255,0.45);
  font-size: 0.78rem;
  white-space: nowrap;
  min-width: 0;
}

/* ===== 共通フッター モバイル ===== */
@media (max-width: 700px) {
  footer { padding: 2rem 1rem 1.5rem; }
  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .footer-nav {
    gap: 0.6rem 1rem;
    justify-content: center;
  }
  .footer-nav a { font-size: 0.76rem; }
  .footer-copy {
    text-align: center;
    white-space: normal;
  }
}