body {
    margin: 0;
    background-color: #020802; /* 极深绿黑 */
    color: #39FF14;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden;
}

.header {
    position: absolute;
    top: 0; width: 100%;
    padding: 20px;
    text-align: center;
    background: linear-gradient(to bottom, rgba(57, 255, 20, 0.1), transparent);
    z-index: 5;
}

.glow-text {
    font-size: 2.5rem;
    margin: 0;
    text-shadow: 0 0 15px rgba(57, 255, 20, 0.7);
    font-weight: 800;
}

.sub-text { font-size: 1rem; opacity: 0.7; vertical-align: middle; }

.stats-panel { margin-top: 10px; }

.defense {
    display: inline-block;
    border: 1px solid #39FF14;
    padding: 5px 20px;
    background: rgba(57, 255, 20, 0.1);
    box-shadow: inset 0 0 10px rgba(57, 255, 20, 0.2);
}

.game-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

#canvas {
    filter: drop-shadow(0 0 10px rgba(57, 255, 20, 0.3));
}

.footer-hint {
    position: absolute;
    bottom: 30px;
    width: 100%;
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.6;
}