.maintenance-stage {
    max-width: 600px;
    margin: 12vh auto;
    padding: 0 20px;
    text-align: center;
    /* 配合全域 SPA 的優雅淡入動畫 */
    animation: fadeMaintenance 0.6s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

.maintenance-card {
    background: #ffffff;
    border-radius: 24px;
    padding: 50px 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(235, 94, 85, 0.1);
}

.maintenance-icon {
    font-size: 50px;
    margin-bottom: 20px;
    display: inline-block;
    animation: gearRotate 4s linear infinite;
}

.maintenance-card h1 {
    font-size: 26px;
    color: #ff4757; /* 醒目的維護紅 */
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.maintenance-card p {
    font-size: 16px;
    color: #666666;
    line-height: 1.8;
}

/* 齒輪旋轉微動效 */
@keyframes gearRotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes fadeMaintenance {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 📱 完美照顧手機格式 */
@media (max-width: 767px) {
    .maintenance-stage {
        margin: 8vh auto;
    }
    .maintenance-card {
        padding: 40px 20px;
        border-radius: 16px;
    }
    .maintenance-card h1 {
        font-size: 22px;
    }
    .maintenance-card p {
        font-size: 14px;
    }
}