/* ==============================================
   撑伞人 — 区块 10：全站 Footer
   ============================================== */

.site-footer {
  background: linear-gradient(180deg, #1a2d42 0%, #0f1c2b 100%);
  color: rgba(255,255,255,0.65);
  padding: 64px 24px 32px;
  position: relative;
  overflow: hidden;
}
/* 静态低密度粒子底纹 */
.site-footer::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.10), transparent),
    radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.08), transparent),
    radial-gradient(1px 1px at 55% 15%, rgba(255,255,255,0.06), transparent),
    radial-gradient(1px 1px at 70% 75%, rgba(255,255,255,0.10), transparent),
    radial-gradient(1px 1px at 85% 40%, rgba(255,255,255,0.07), transparent),
    radial-gradient(1px 1px at 15% 85%, rgba(255,255,255,0.05), transparent),
    radial-gradient(1px 1px at 45% 45%, rgba(255,255,255,0.08), transparent),
    radial-gradient(1px 1px at 90% 80%, rgba(255,255,255,0.06), transparent);
  pointer-events: none;
  z-index: 0;
}

.footer-inner {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
}

/* 三栏布局 */
.footer-grid {
  display: grid;
  grid-template-columns: 1fr 2fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

/* 左侧：品牌 */
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-brand img {
  width: 40px; height: 40px;
  border-radius: 50%;
}
.footer-brand .slogan {
  font-size: 14px;
  color: rgba(255,255,255,0.50);
  letter-spacing: 2px;
}

/* 中部：导航链接 */
.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px 24px;
  align-content: start;
}
.footer-nav a {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  transition: color 240ms var(--ease);
  letter-spacing: 0.5px;
}
.footer-nav a:hover { color: var(--amber); }

/* 右侧：功能入口 */
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links a {
  font-size: 13px;
  color: rgba(255,255,255,0.50);
  text-decoration: none;
  transition: color 240ms var(--ease);
}
.footer-links a:hover { color: rgba(255,255,255,0.80); }

/* 底部 */
.footer-bottom {
  text-align: center;
  padding-top: 24px;
  font-size: 12px;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.5px;
}

/* ==============================================
   Responsive
   ============================================== */
@media (max-width: 768px) {
  .site-footer { padding: 40px 16px 24px; }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
    text-align: center;
  }
  .footer-brand { align-items: center; }
  .footer-nav {
    grid-template-columns: repeat(2, 1fr);
    text-align: center;
  }
  .footer-links { align-items: center; }
}