body {
    background: #f5f9fb;
    font-family: 'Segoe UI', sans-serif;
}

.page-title {
    font-size: 32px;
    font-weight: 700;
    color: #0d8f8f;
}

.page-subtitle {
    font-size: 16px;
    color: #666;
}

.calc-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    margin-top: 25px;
    box-shadow: 0 4px 14px rgba(0,0,0,0.06);
    border-left: 5px solid #0d8f8f;
}

.calc-label {
    font-size: 16px;
    font-weight: 500;
    color: #0d8f8f;
}

.calc-input {
    height: 42px;
    border-radius: 8px;
}

.calc-result {
    height: 42px;
    border-radius: 8px;
    background: #eef4f7;
    font-weight: 600;
    color: #0d8f8f;
}

.tips {
    color: #666;
    font-size: 14px;
}