:root {
  --bg: #0e1116;
  --panel: #161b24;
  --panel-hover: #1c2330;
  --text: #e6e9ef;
  --dim: #8b94a7;
  --accent: #7fb4ff;
  --border: #232b3a;
}

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

body {
  background: radial-gradient(1200px 600px at 70% -10%, #16213a 0%, var(--bg) 55%);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, "Segoe UI", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  min-height: 100vh;
  display: flex;
  justify-content: center;
}

main {
  width: min(720px, 92vw);
  padding: 9vh 0 6vh;
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

header { text-align: center; }

.penguin {
  font-size: 4rem;
  display: inline-block;
  animation: breathe 5s ease-in-out infinite;
}

@keyframes breathe {
  0%, 100% { transform: translateY(0) rotate(-3deg); }
  50%      { transform: translateY(-6px) rotate(3deg); }
}

h1 {
  font-size: clamp(2.2rem, 6vw, 3.2rem);
  letter-spacing: -0.02em;
  margin-top: 0.5rem;
}

.tagline { color: var(--dim); margin-top: 0.6rem; font-size: 1.05rem; }
.zh { display: block; margin-top: 0.2rem; }

.cards { display: flex; flex-direction: column; gap: 1rem; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.4rem 1.6rem;
  text-decoration: none;
  color: inherit;
  transition: background 0.25s, transform 0.25s, border-color 0.25s;
}

a.card:hover {
  background: var(--panel-hover);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card h2 { font-size: 1.25rem; display: flex; align-items: center; gap: 0.6rem; }
.card p { color: var(--dim); margin-top: 0.5rem; line-height: 1.55; }
.card p.zh { font-size: 0.92rem; }

.badge {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #7ee2a8;
  background: rgba(126, 226, 168, 0.12);
  border: 1px solid rgba(126, 226, 168, 0.35);
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
}

.soon { opacity: 0.65; }

footer { text-align: center; color: var(--dim); font-size: 0.92rem; line-height: 1.8; }
.dim { opacity: 0.6; }