:root {
  --bg: #0b1020;
  --card: rgba(255, 255, 255, 0.055);
  --card-hover: rgba(255, 255, 255, 0.1);
  --border: rgba(255, 255, 255, 0.12);
  --text: #eef2ff;
  --text-dim: #9aa3c0;
  --accent: #5b8cff;
  --accent-2: #22d3ee;
  --online: #34d399;
  --offline: #f87171;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: radial-gradient(1200px 800px at 15% -10%, #16224a 0%, var(--bg) 55%);
  color: var(--text);
  display: flex;
  justify-content: center;
  padding: 48px 20px;
  overflow-x: hidden;
}

.bg-decoration {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.45;
  animation: float 14s ease-in-out infinite;
}

.orb-1 {
  width: 380px;
  height: 380px;
  background: #2f4fd8;
  top: -120px;
  right: -80px;
}

.orb-2 {
  width: 300px;
  height: 300px;
  background: #0ea5b7;
  bottom: -100px;
  left: -80px;
  animation-delay: -5s;
}

.orb-3 {
  width: 220px;
  height: 220px;
  background: #7c3aed;
  top: 45%;
  left: 55%;
  animation-delay: -9s;
  opacity: 0.3;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(35px) scale(1.06); }
}

.container {
  width: 100%;
  max-width: 960px;
}

.hero {
  text-align: center;
  margin-bottom: 44px;
}

.logo {
  font-size: 56px;
  line-height: 1;
  margin-bottom: 18px;
  filter: drop-shadow(0 8px 24px rgba(91, 140, 255, 0.35));
}

h1 {
  font-size: clamp(28px, 4.5vw, 40px);
  font-weight: 700;
  letter-spacing: 0.5px;
  background: linear-gradient(100deg, #ffffff 20%, #9db8ff 60%, #7de3f4);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  margin-top: 12px;
  color: var(--text-dim);
  font-size: 15px;
}

.site-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.site-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 26px 24px;
  border-radius: 18px;
  background: var(--card);
  border: 1px solid var(--border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  text-decoration: none;
  color: var(--text);
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease,
    box-shadow 0.2s ease;
  overflow: hidden;
}

.site-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(91, 140, 255, 0.16), transparent 60%);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.site-card:hover {
  transform: translateY(-5px);
  background: var(--card-hover);
  border-color: rgba(91, 140, 255, 0.55);
  box-shadow: 0 18px 45px rgba(5, 10, 30, 0.55);
}

.site-card:hover::before {
  opacity: 1;
}

.card-top {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-icon {
  font-size: 38px;
  line-height: 1;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.35));
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-dim);
  background: rgba(0, 0, 0, 0.28);
  padding: 5px 10px;
  border-radius: 999px;
}

.status .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-dim);
}

.status.online {
  color: #a7f3d0;
}

.status.online .dot {
  background: var(--online);
  box-shadow: 0 0 8px var(--online);
  animation: pulse 2s ease-in-out infinite;
}

.status.offline {
  color: #fecaca;
}

.status.offline .dot {
  background: var(--offline);
  box-shadow: 0 0 8px var(--offline);
}

.status.checking .dot {
  background: #fbbf24;
  animation: blink 1s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}

.card-name {
  position: relative;
  font-size: 20px;
  font-weight: 650;
  letter-spacing: 0.3px;
}

.card-desc {
  position: relative;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.6;
  min-height: 44px;
}

.card-url {
  position: relative;
  font-size: 12px;
  color: var(--accent-2);
  opacity: 0.85;
  word-break: break-all;
}

.site-card:hover .card-url {
  opacity: 1;
}

.card-arrow {
  position: absolute;
  top: 50%;
  right: 18px;
  transform: translateY(-50%);
  font-size: 20px;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.site-card:hover .card-arrow {
  opacity: 0.7;
  transform: translateY(-50%) translateX(4px);
}

.footer {
  margin-top: 46px;
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
}

.footer code {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 12px;
  color: #b8c8ff;
}

@media (max-width: 640px) {
  body {
    padding: 32px 16px;
  }
  .site-grid {
    grid-template-columns: 1fr;
  }
}