:root {
  color-scheme: dark;
  font-family: "Segoe UI", "Microsoft YaHei", system-ui, sans-serif;
  background: #081018;
  color: #e8f0f4;
}

* { box-sizing: border-box; }

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  grid-template-rows: 1fr auto;
  background:
    radial-gradient(circle at 15% 12%, rgba(51, 152, 176, .22), transparent 34rem),
    radial-gradient(circle at 90% 88%, rgba(181, 121, 58, .14), transparent 30rem),
    #081018;
}

main {
  width: min(70rem, calc(100% - 2rem));
  margin: auto;
  padding: 5rem 0 3rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: #79d0dc;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .18em;
}

h1 {
  margin: 0;
  font-size: clamp(2.8rem, 8vw, 6.8rem);
  letter-spacing: -.055em;
  line-height: .95;
}

.intro {
  max-width: 38rem;
  margin: 1.4rem 0 3rem;
  color: #a9bbc4;
  font-size: clamp(1rem, 2vw, 1.25rem);
}

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  min-height: 18rem;
  padding: 1.6rem;
  display: flex;
  flex-direction: column;
  border: 1px solid #253944;
  border-radius: 1rem;
  color: inherit;
  text-decoration: none;
  background: rgba(13, 27, 36, .82);
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}

.card:hover, .card:focus-visible {
  transform: translateY(-4px);
  border-color: #55b6c5;
  background: rgba(18, 40, 50, .95);
  outline: none;
}

.tag {
  align-self: flex-start;
  padding: .3rem .55rem;
  border-radius: 99rem;
  background: #173d48;
  color: #91e5ef;
  font-size: .72rem;
  font-weight: 700;
}

.tag.public { background: #3b311f; color: #e9c678; }
.card h2 { margin: 2rem 0 .6rem; font-size: 1.7rem; }
.card p { margin: 0; color: #a9bbc4; line-height: 1.7; }
.action { margin-top: auto; color: #d8f5f8; font-weight: 650; }
footer { padding: 1.4rem; color: #66808d; text-align: center; font-size: .78rem; }

@media (max-width: 700px) {
  main { padding-top: 3rem; }
  .cards { grid-template-columns: 1fr; }
  .card { min-height: 15rem; }
}