* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "Microsoft YaHei", -apple-system, "Segoe UI", sans-serif;
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.wrap { text-align: center; color: #fff; padding: 30px 20px; }
.logo { margin-bottom: 6px; }
.logo svg { display: inline-block; filter: drop-shadow(0 4px 14px rgba(0,0,0,0.25)); }
h1 { font-size: 28px; margin: 16px 0 8px; letter-spacing: 2px; }
.sub { color: #c5d5f0; margin-bottom: 36px; }
.version-box { display: flex; gap: 24px; justify-content: center; flex-wrap: wrap; }
.v-btn {
  display: block;
  width: 220px;
  padding: 30px 20px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 16px;
  color: #fff;
  text-decoration: none;
  transition: all .25s;
  backdrop-filter: blur(4px);
}
.v-btn:hover { background: rgba(255,255,255,0.22); transform: translateY(-4px); box-shadow: 0 10px 30px rgba(0,0,0,0.3); }
.v-btn .icon svg { display: inline-block; vertical-align: middle; filter: drop-shadow(0 3px 8px rgba(0,0,0,0.2)); }
.v-btn .name { font-size: 20px; font-weight: bold; margin: 12px 0 6px; }
.v-btn .desc { font-size: 13px; color: #c5d5f0; }
@media (max-width: 560px) {
  .version-box { flex-direction: column; align-items: center; }
  .v-btn { width: 80%; }
}