* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Segoe UI", "Microsoft YaHei", sans-serif;
  background: #2c2c2c; color: #eee;
  min-height: 100vh; display: flex; flex-direction: column; align-items: center;
  padding: 40px 16px 24px; gap: 32px;
}
header { text-align: center; }
header h1 {
  font-size: 34px; font-weight: 700; color: #f0c060; letter-spacing: 2px;
}
header p { margin-top: 8px; font-size: 14px; color: #aaa; letter-spacing: 6px; }
.cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px; width: 100%; max-width: 840px;
}
.card {
  display: flex; flex-direction: column;
  background: #3a3a3a; border-radius: 10px; overflow: hidden;
  text-decoration: none; color: #eee;
  border: 1px solid transparent;
  box-shadow: 0 6px 20px rgba(0,0,0,.4);
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}
.card:hover {
  transform: translateY(-4px); border-color: #f0c060;
  box-shadow: 0 10px 28px rgba(0,0,0,.5);
}
.card:focus-visible { outline: 2px solid #f0c060; outline-offset: 2px; }
.thumb { background: #2e2e2e; padding: 18px; display: flex; justify-content: center; }
.thumb svg { width: 132px; height: 132px; display: block; }
.card-body { padding: 14px 16px 18px; display: flex; flex-direction: column; gap: 6px; }
.card-body h2 { font-size: 18px; color: #f0c060; letter-spacing: 4px; }
.domain { font-size: 13px; color: #ffd479; font-family: Consolas, "Courier New", monospace; }
.desc { font-size: 13px; color: #aaa; line-height: 1.6; }
footer { margin-top: auto; font-size: 12px; color: #777; }
@media (max-width: 640px) {
  body { padding: 24px 12px 16px; gap: 24px; }
  header h1 { font-size: 28px; }
  .thumb svg { width: 104px; height: 104px; }
}