.sp-footer{
  position: relative;
  color: #f8f9fa;
  background: radial-gradient(1200px 600px at 20% -10%, #2b3035 0%, #1f2327 40%, #15181b 100%);
  overflow: hidden;
  isolation: isolate;
}

/* Волна-разделитель */
.sp-footer-wave svg{ width:100%; height:80px; display:block; }
.sp-footer-wave path{ fill:#ffffff; opacity:.9; }
@media (prefers-color-scheme: dark){
  .sp-footer-wave path{ fill:#0d0f11; opacity:.35; }
}

/* Заголовки/текст */
.sp-foot-title{
  font-weight: 800;
  letter-spacing: .5px;
  margin-bottom:.5rem;
}
.sp-foot-sub{
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight:700;
  color:#e9ecef;
  margin-bottom:.75rem;
}
.sp-foot-text{ color:#ced4da; margin:0; }
.sp-foot-muted{ color:#adb5bd; }

/* Списки */
.sp-foot-list{ list-style:none; padding:0; margin:0; display:grid; gap:.5rem; }
.sp-foot-link{
  color:#dee2e6; text-decoration:none; position:relative; display:inline-block;
  transition: color .2s ease, transform .2s ease;
}
.sp-foot-link::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px; height:1px;
  background: currentColor; transform: scaleX(0); transform-origin: left;
  transition: transform .25s ease;
}
.sp-foot-link:hover{ color:#fff; transform: translateX(2px); }
.sp-foot-link:hover::after{ transform: scaleX(1); }

/* Соцкнопки */
.sp-social{
  --size: 40px;
  width:var(--size); height:var(--size);
  border-radius:9999px;
  display:inline-flex; align-items:center; justify-content:center;
  border-color: rgba(255,255,255,.35) !important;
  color:#f8f9fa !important;
  background: rgba(255,255,255,.04);
  transition: transform .18s ease, background-color .18s ease, border-color .18s ease;
}
.sp-social i{ font-size:1.15rem; line-height:1; }
.sp-social:hover{
  transform: translateY(-2px);
  background: rgba(255,255,255,.12);
  border-color: rgba(255,255,255,.6) !important;
}

/* Разделитель */
.sp-foot-hr{ border-color: rgba(255,255,255,.15); opacity:1; }

/* Анимации появления */
.reveal{ opacity:0; transform: translateY(10px); }
.reveal.in-view{ opacity:1; transform: translateY(0); transition: opacity .5s ease, transform .5s ease; }

/* Адаптивности чуть больше воздуха */
@media (max-width: 575.98px){
  .sp-footer .container{ padding-left: 1rem; padding-right:1rem; }
  .sp-social{ --size: 44px; }
}
@media (prefers-reduced-motion: reduce){
  .sp-social, .sp-foot-link, .reveal{ transition: none !important; }
}