:root{
  --bg: #070A12;
  --panel: rgba(255,255,255,0.04);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.62);
  --line: rgba(255,255,255,0.12);
  --accent: #00F5FF; /* シアン系 */
}

*{ box-sizing: border-box; }

html, body{
  height: 100%;
  margin: 0;
  padding: 0;
  color: var(--text);
  background: radial-gradient(1200px 700px at 20% 10%, rgba(0,245,255,0.10), transparent 55%),
              radial-gradient(900px 600px at 85% 30%, rgba(255,0,120,0.06), transparent 55%),
              var(--bg);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Noto Sans JP", sans-serif;
}

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

.container{
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px;
}

.panel{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  backdrop-filter: blur(10px);
}

.hud{
  border: 1px solid rgba(0,245,255,0.35);
  box-shadow: 0 0 18px rgba(0,245,255,0.18);
}

.badge{
  display: inline-flex;
  gap: 6px;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(0,245,255,0.35);
  color: var(--text);
  background: rgba(0,245,255,0.08);
  font-size: 12px;
}

hr{
  border: 0;
  border-top: 1px solid var(--line);
  margin: 14px 0;
}