body { background: #fffde7; font-family: 'Zen Maru Gothic', sans-serif; display: flex; flex-direction: column; align-items: center; padding: 20px; color: #333; }
.container { background: white; padding: 20px; border-radius: 20px; box-shadow: 0 5px 15px rgba(0,0,0,0.1); width: 100%; max-width: 500px; text-align: center; }
.controls { font-size: 1.5rem; font-weight: bold; margin: 20px 0; }
select { font-size: 1.5rem; padding: 5px; border-radius: 10px; }
#block-stage { 
    display: grid; gap: 5px; margin: 20px auto; justify-content: center;
}
.block { width: 30px; height: 30px; background: #ff7043; border-radius: 5px; box-shadow: 0 2px 0 #bf360c; }
.back-btn { align-self: flex-start; text-decoration: none; color: #333; font-weight: bold; }
.seo-text-box { margin-top: 30px; background: white; padding: 20px; border-radius: 15px; width: 90%; max-width: 500px; }