*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  min-height:100vh;
  background:
    radial-gradient(820px 520px at 8% -5%,#e0e7ff 0,transparent 60%),
    radial-gradient(720px 520px at 105% 105%,#cffafe 0,transparent 55%),
    #f4f6fb;
  color:#0f172a;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}

.page{
  min-height:100vh;display:flex;align-items:center;justify-content:center;
  padding:28px 18px;
}
.card{
  position:relative;overflow:hidden;
  width:100%;max-width:400px;padding:40px 32px 30px;
  background:#fff;border:1px solid rgba(226,232,240,.9);border-radius:24px;
  box-shadow:0 30px 70px rgba(30,41,59,.13);
  text-align:center;
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:4px;
  background:linear-gradient(90deg,#2563eb,#06b6d4);
}
.icon{
  width:84px;height:84px;margin:0 auto 18px;border-radius:22px;
  display:grid;place-items:center;overflow:hidden;
  background:linear-gradient(135deg,#2563eb,#06b6d4);
  color:#fff;font-size:34px;font-weight:800;letter-spacing:1px;
  box-shadow:0 14px 30px rgba(37,99,235,.3);
}
.icon img{width:100%;height:100%;object-fit:cover;display:block}
h1{margin:0 0 4px;font-size:23px;line-height:1.3;letter-spacing:.2px}
.ver{margin:0 0 14px;font-size:12.5px;color:#64748b}
.sum{
  margin:0 0 20px;font-size:14px;line-height:1.75;color:#64748b;
  display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden;
}
.tags{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.tags span{
  padding:4px 11px;border-radius:999px;background:#f1f5f9;border:1px solid #e2e8f0;
  font-size:12px;color:#475569;
}
.btn{
  display:block;width:100%;padding:14px 16px;border-radius:12px;
  background:linear-gradient(135deg,#2563eb,#0ea5e9);color:#fff;
  font-size:15.5px;font-weight:600;letter-spacing:.5px;
  box-shadow:0 14px 30px rgba(37,99,235,.28);
  transition:transform .18s ease,box-shadow .18s ease;
}
.btn:hover{transform:translateY(-1px);box-shadow:0 18px 38px rgba(37,99,235,.36)}
.btn:active{transform:translateY(0)}
.tip{margin:12px 0 0;font-size:11.5px;color:#94a3b8}

@media (max-width:480px){
  .card{padding:32px 22px 24px;border-radius:20px}
  .icon{width:72px;height:72px;font-size:29px;border-radius:19px;margin-bottom:16px}
  h1{font-size:21px}
  .sum{font-size:13.5px}
  .btn{padding:13px;font-size:15px}
}