body {
  margin: 0;
  padding: 0;
  font-family: 'Montserrat', Arial, sans-serif;
  background: #000;
  color: #fff;
}
.container {
  max-width: 400px;
  margin: 0 auto;
  position: relative;
  min-height: 100vh;
  background: #000;
  box-shadow: 0 0 20px #000a;
  overflow: hidden;
}
.background {
  position: absolute;
  top: 0; left: 0; width: 100%;
  height: 520px;
  max-height: 520px;
  object-fit: cover;
  opacity: 0.15;
  z-index: 0;
  background: #000;
}
.content {
  position: relative;
  z-index: 1;
  padding: 32px 16px 0 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.mask {
  width: 120px;
  margin-bottom: 16px;
  margin-top: 8px;
}
h1 {
  font-size: 1.6rem;
  font-weight: 700;
  text-align: center;
  margin: 0 0 8px 0;
  line-height: 1.2;
}
.blue {
  color: #3a7bfd;
}
.subtitle {
  font-size: 0.75rem;
  color: #bdbdbd;
  text-align: center;
  margin: 0;
  margin-top: -20px;
}
.cards {
  display: flex;
  flex-direction: column;
  gap: 18px;
  width: 90%;
  max-width: 340px;
  margin-bottom: 32px;
  margin-top: 350px;
  margin-left: auto;
  margin-right: auto;
}
.card {
  display: block;
  min-height: 80px;
  height: 90px;
  border-radius: 16px;
  box-shadow: 0 2px 12px #0006;
  transition: transform 0.15s, box-shadow 0.15s;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  margin-bottom: 0;
}
.card img {
  width: 56px;
  height: 56px;
  margin-right: 16px;
  border-radius: 12px;
  object-fit: contain;
}
.card-text span {
  font-size: 0.85rem;
  font-weight: 500;
  display: block;
}
.card-text strong {
  font-size: 1.1rem;
  font-weight: 800;
  display: block;
  margin-bottom: 2px;
}
.card-text p {
  font-size: 0.85rem;
  color: #bdbdbd;
  margin: 0;
}
.card.instagram {
  background: url('instagram.png') center center/cover no-repeat;
}
.card.youtube {
  background: url('youtube.png') center center/cover no-repeat;
}
.card.close-friends {
  background: url('cf.png') center center/cover no-repeat;
}
.card:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 24px #000a;
}
footer {
  width: 100%;
  text-align: center;
  padding: 18px 0 12px 0;
  font-size: 0.95rem;
  color: #bdbdbd;
  background: transparent;
  position: relative;
  z-index: 2;
  margin-top: -25px;
}
.footer-line {
  width: 100%;
  height: 1px;
  background: #222;
  margin: 0 auto 18px auto;
  opacity: 0.7;
}
@media (max-width: 480px) {
  .container {
    max-width: 100vw;
    min-height: 100vh;
    border-radius: 0;
  }
  .content {
    padding: 18px 4px 0 4px;
  }
  .card {
    padding: 10px 8px;
  }
  .mask {
    width: 90px;
  }
}