* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 44px;
  background: rgba(22, 22, 23, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.nav-inner {
  width: min(980px, 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 0 22px;
  gap: 18px;
}

.nav-logo {
  color: #f5f5f7;
  text-decoration: none;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
  position: absolute;
  left: 22px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-links a {
  color: rgba(245, 245, 247, 0.82);
  text-decoration: none;
  font-size: 12px;
  margin: 0;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: #ffffff;
}

.site-footer {
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  padding: 32px 0 0;
  margin-top: 60px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: rgba(0, 0, 0, 0.56);
  font-size: 13px;
}

.footer-inner p {
  margin: 0;
  font-size: 13px;
  color: rgba(0, 0, 0, 0.56);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 22px;
}

.footer-links a {
  color: rgba(0, 0, 0, 0.64);
  text-decoration: none;
  margin: 0;
  font-size: 13px;
}

.footer-links a:hover {
  color: #111;
}

@media (max-width: 720px) {
  .nav-inner {
    padding: 0 16px;
    overflow-x: auto;
  }

  .nav-logo {
    display: none;
  }

  .nav-links {
    gap: 18px;
  }

  .nav-links a {
    font-size: 11px;
  }

  .nav-links a.optional {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
    justify-content: center;
  }

  .footer-links {
    gap: 18px;
  }
}