:root {
  --brand-primary: #0066ff;
  --brand-accent:  #ff7a00;
  --brand-bg:      #ffffff;
  --brand-fg:      #0a0a0a;
  --brand-muted:   #6b7280;
  --brand-surface: #f5f5f7;
  --brand-border:  #e5e5ea;
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand-bg:      #0a0a0a;
    --brand-fg:      #f5f5f7;
    --brand-muted:   #9ca3af;
    --brand-surface: #1c1c1e;
    --brand-border:  #2c2c2e;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--brand-bg);
  color: var(--brand-fg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text",
    system-ui, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: clamp(1.5rem, 5vw, 3rem) clamp(1rem, 4vw, 2rem);
  padding-top: max(env(safe-area-inset-top), clamp(1.5rem, 5vw, 3rem));
  padding-bottom: max(env(safe-area-inset-bottom), 1.5rem);
}

.hero {
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: clamp(1.75rem, 6vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

.subtitle {
  color: var(--brand-muted);
  font-size: 1.05rem;
  line-height: 1.5;
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
}

.card {
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--brand-surface);
  border: 1px solid var(--brand-border);
  border-radius: 1rem;
  padding: 1.25rem;
  transition: transform 0.12s ease, border-color 0.12s ease;
}

.card:hover { border-color: var(--brand-primary); }
.card:active { transform: scale(0.98); }

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--brand-primary);
  background: color-mix(in srgb, var(--brand-primary) 12%, transparent);
  padding: 0.25rem 0.625rem;
  border-radius: 999px;
  margin-bottom: 0.75rem;
}

.name {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.hint {
  font-size: 0.875rem;
  color: var(--brand-muted);
  line-height: 1.4;
  margin: 0;
}

.footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--brand-border);
  color: var(--brand-muted);
  font-size: 0.875rem;
}

.footer a {
  color: var(--brand-primary);
  text-decoration: none;
}

.footer a:hover { text-decoration: underline; }