/* feature-id: hello-cici-20260818 */
:root {
  --bg-start: #f6f7fb;
  --bg-end: #eef2ff;
  --card-bg: #ffffff;
  --text-main: #1f2937;
  --text-sub: #6b7280;
  --accent: #4f46e5;
  --radius: 12px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto,
    "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(135deg, var(--bg-start), var(--bg-end));
  color: var(--text-main);
}

main {
  text-align: center;
  padding: 3rem 2.5rem;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: 0 10px 30px rgba(31, 41, 55, 0.08);
  max-width: 90vw;
}

.title {
  font-size: 3rem;
  margin: 0 0 0.75rem;
  letter-spacing: 0.02em;
}

.title::after {
  content: "";
  display: block;
  width: 3rem;
  height: 4px;
  margin: 1rem auto 0;
  background: var(--accent);
  border-radius: 2px;
}

.desc {
  font-size: 1.1rem;
  color: var(--text-sub);
  margin: 0 0 1.5rem;
}

.time {
  font-size: 0.95rem;
  color: var(--text-sub);
  margin: 0;
}

@media (max-width: 480px) {
  .title {
    font-size: 2.25rem;
  }

  main {
    padding: 2rem 1.5rem;
  }
}