@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@700&family=Inter:wght@400;700;900&display=swap');
    body {
      background-color: #0f1117;
      color: #e2e8f0;
      font-family: 'Inter', sans-serif;
      overflow: hidden;
    }
    .font-mono { font-family: 'JetBrains Mono', monospace; }
    .neon-glow { text-shadow: 0 0 10px rgba(34, 211, 238, 0.5); }
    .ko-box {
      transition: all 0.1s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    }
    .active-ko {
      background: #06b6d4;
      box-shadow: 0 0 20px rgba(6, 182, 212, 0.6);
      transform: scale(1.1);
      color: white;
    }
    @keyframes finish-pop {
      0% { transform: scale(0.5); opacity: 0; }
      100% { transform: scale(1); opacity: 1; }
    }
    .finish-anim { animation: finish-pop 0.3s forwards; }