/* 親サイト（ポータル）最小スタイル。中身が固まったら拡張する */
:root {
  --bg: #0f1115;
  --fg: #e8e8e8;
  --muted: #9aa0a6;
  --card: #1a1d24;
  --accent: #4da3ff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}

.hero {
  text-align: center;
  padding: 4rem 1rem 2rem;
}

.hero h1 {
  margin: 0;
  font-size: 2.6rem;
  letter-spacing: 0.04em;
}

.tagline {
  color: var(--muted);
  margin-top: 0.5rem;
}

.projects {
  max-width: 880px;
  margin: 0 auto;
  padding: 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}

.card {
  display: block;
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 1.25rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

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

.card h2 {
  margin: 0 0 0.4rem;
  font-size: 1.2rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

footer {
  text-align: center;
  color: var(--muted);
  padding: 3rem 1rem 2rem;
  font-size: 0.85rem;
}