#lvit-calculator {
    max-width: 800px;
    margin: 40px auto;
    background: #ffffff;
    padding: 35px;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.08);
    font-family: "PingFang TC", "Microsoft JhengHei", sans-serif;
    color: #333;
}

.lvit-title { text-align: center; color: #1a3a5f; margin-bottom: 30px; font-weight: 700; }

.lvit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }

.lvit-form-group label { display: block; margin-bottom: 8px; font-weight: 600; font-size: 14px; }

.lvit-form-group input, .lvit-form-group select {
    width: 100%; height: 50px; border: 2px solid #edf2f7; border-radius: 12px;
    background: #f8fafc; font-size: 16px; padding: 0 15px; box-sizing: border-box;
}

.lvit-flex-row { display: flex; align-items: center; gap: 10px; }

#btn-calculate {
    width: 100%; background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white; padding: 16px; border: none; border-radius: 12px;
    font-size: 18px; font-weight: 700; cursor: pointer; margin-top: 10px;
}

/* 結果區塊美化 */
#lvit-result { margin-top: 30px; padding: 25px; border-radius: 15px; background: #fcfcfc; border: 1px solid #eee; }

.result-summary-box { background: #fff; padding: 15px; border-radius: 10px; border: 1px solid #eef2f6; margin-bottom: 20px; }
.result-summary-box p { margin: 5px 0; font-size: 15px; }

.result-comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.compare-card { padding: 20px; border-radius: 15px; text-align: center; }
.self-card { background: #fff9f0; border: 1px solid #ffe8cc; }
.general-card { background: #f0f7ff; border: 1px solid #d0e3ff; }

.card-head { font-weight: 700; color: #555; margin-bottom: 10px; }
.tax-amount { font-size: 28px; font-weight: 800; color: #e74c3c; }
.card-foot { font-size: 12px; color: #7f8c8d; margin-top: 8px; }

@media (max-width: 600px) {
    .lvit-grid, .result-comparison { grid-template-columns: 1fr; }
}