:root {
  --bg: #f7f6f2;
  --fg: #1d1d1b;
  --muted: #6b6a65;
  --line: #dddbd3;
  --card: #ffffff;
  --accent: #3b5bdb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141413;
    --fg: #ecebe6;
    --muted: #9a9890;
    --line: #2c2b28;
    --card: #1c1c1a;
    --accent: #8ea4ff;
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.7;
}

.wrap {
  flex: 1;
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

.hero {
  padding: 18vh 0 64px;
}

.logo {
  margin: 0;
  font-size: clamp(2.5rem, 9vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.tagline {
  margin: 16px 0 0;
  color: var(--muted);
}

.section {
  padding-bottom: 64px;
}

.section-title {
  margin: 0 0 16px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.card {
  display: block;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: inherit;
  text-decoration: none;
}

a.card:hover,
a.card:focus-visible {
  border-color: var(--accent);
}

.card--soon {
  border-style: dashed;
  background: transparent;
}

.card-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
}

.card-text {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.footer {
  padding: 24px 16px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--muted);
}

.footer p {
  margin: 0;
}

.notfound {
  padding: 18vh 0 64px;
}

.notfound a {
  color: var(--accent);
}