/* ============================================================
   footer.css — 浅蓝紫噪点 footer
   ============================================================ */

.footer {
  position: relative;
  background: var(--mist);
  overflow: clip;
}
.footer__noise {
  position: absolute;
  inset: auto 0 0;
  width: 100%;
  opacity: .8;
  pointer-events: none;
}
.footer__inner { position: relative; padding: 55px 0 25px; }

.footer__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
}
.footer__logo { height: 28px; width: auto; }
.footer__headline {
  margin: 24px 0 34px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(40px, 4.4vw, 62px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 16ch;
}
.footer__mark { width: clamp(180px, 22vw, 320px); }

.footer__cols {
  display: grid;
  grid-template-columns: 1fr auto auto minmax(200px, 260px);
  gap: clamp(40px, 6vw, 120px);
  margin-top: 50px;
}
.footer__cols h3 {
  font-size: 20px;
  margin-bottom: 22px;
}
.footer__links { display: grid; align-content: start; gap: 0; }
.footer__links a {
  padding: 7px 0;
  font-size: 17px;
  color: var(--ink);
  transition: opacity .2s;
  justify-self: start;
}
.footer__links a:hover { opacity: .6; }
.footer__address p { color: var(--slate); font-size: 17px; }

.footer__social-row { display: flex; gap: 12px; }
.footer__social-row a {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid rgb(3 0 40 / .3);
  display: grid;
  place-items: center;
  transition: background .2s;
}
.footer__social-row a:hover { background: rgb(3 0 40 / .06); }

.footer__bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 50px;
  padding-top: 28px;
  border-top: 1px solid rgb(3 0 40 / .12);
  font-size: 15px;
  color: var(--gray);
}

@media (max-width: 809px) {
  .footer__inner { padding-top: 66px; }
  .footer__top { flex-direction: column; }
  .footer__mark { order: -1; align-self: flex-end; width: 140px; margin-top: -30px; }
  .footer__cols { grid-template-columns: 1fr; gap: 40px; margin-top: 60px; }
  .footer__bottom { flex-direction: column; margin-top: 60px; }
}