body {
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: #0a0a0d;
  color: #f8fafc;
}

.iphone-shell {
  width: 390px;
  height: 844px;
  border-radius: 54px;
  background: linear-gradient(145deg, #111318, #050608);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 10px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.65);
  position: relative;
}

.iphone-shell::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 110px;
  height: 28px;
  border-radius: 20px;
  background: #010102;
  z-index: 9;
}

.screen {
  width: 100%;
  height: 100%;
  border-radius: 44px;
  overflow: hidden;
  background: #000;
}

.safe-top {
  padding-top: 46px;
}

.glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.feed-bg-a {
  background: radial-gradient(circle at 20% 0%, rgba(74, 222, 128, 0.22), transparent 45%),
    radial-gradient(circle at 90% 10%, rgba(56, 189, 248, 0.2), transparent 42%),
    linear-gradient(180deg, #071115, #020407 70%);
}

.feed-bg-b {
  background: radial-gradient(circle at 0% 10%, rgba(34, 211, 238, 0.25), transparent 48%),
    radial-gradient(circle at 90% 0%, rgba(45, 212, 191, 0.2), transparent 45%),
    linear-gradient(180deg, #082631, #05131a 72%);
}

.feed-bg-c {
  background: radial-gradient(circle at 10% 0%, rgba(251, 146, 60, 0.25), transparent 45%),
    radial-gradient(circle at 90% 10%, rgba(236, 72, 153, 0.22), transparent 42%),
    linear-gradient(180deg, #2a0f1e, #100710 75%);
}

.mini-scrollbar::-webkit-scrollbar {
  width: 4px;
}

.mini-scrollbar::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.25);
  border-radius: 10px;
}