/* ============================================================
   星冕 VR3D — Footer（统一 Footer）
   ============================================================ */

.site-footer {
  position: relative;
  border-top: 1px solid var(--border-soft);
  background: linear-gradient(180deg, transparent, var(--bg-soft));
  margin-top: 40px;
  overflow: hidden;
}

/* 底部空间网格氛围线 */
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, transparent, #000 60%);
  pointer-events: none;
}

.footer-container {
  position: relative;
  width: min(1440px, 100% - clamp(32px, 8vw, 120px));
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-block: clamp(52px, 8vh, 90px) 40px;
}

.footer-brand h2 {
  font-size: 1.9rem;
  font-weight: 800;
  letter-spacing: -.02em;
}
.footer-brand p {
  margin-top: 14px;
  color: var(--text-2);
  max-width: 320px;
}

.footer-col h4 {
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .22em;
  color: var(--text-3);
  margin-bottom: 18px;
}
.footer-col ul { display: grid; gap: 10px; }
.footer-col a { color: var(--text-2); font-size: .93rem; transition: color .3s, padding-left .3s; }
.footer-col a:hover { color: var(--text); padding-left: 4px; }

.footer-social { display: flex; flex-wrap: wrap; gap: 10px; }
.footer-social a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 15px;
  border: 1px solid var(--border);
  border-radius: var(--r-pill);
  font-size: .86rem;
  color: var(--text-2);
  transition: all .3s;
}
.footer-social a:hover {
  color: var(--text);
  border-color: var(--neon);
  box-shadow: var(--glow-accent);
  transform: translateY(-2px);
}
.footer-social svg { width: 16px; height: 16px; }

.copyright {
  position: relative;
  border-top: 1px solid var(--border-soft);
  padding: 22px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  color: var(--text-3);
  font-size: .84rem;
}
.copyright .admin-link:hover { color: var(--neon); }

@media (max-width: 992px) {
  .footer-container { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer-container { grid-template-columns: 1fr; gap: 34px; }
}